Even or Odd?

Is 0 even or odd? \large \text{Is } 0 \text{ even or odd?}

Odd Even Both Neither

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22 solutions

Akhil Bansal
Oct 21, 2015

Method 1 : A number is called even if it is an integer multiple of 2.
0 × 2 = 0 \large 0 \times 2 = 0

Hence , 0 is an even number .

Method 2 : Any number can also said to be even if it gives remainder 0 when divided by 2. 0 % 2 = 0 \large 0 \ \% \ 2 = 0

Hence, 0 is an even number .

Method 3 : 0 ? \color{#D61F06}0 \rightarrow \quad \quad \quad ? \quad \quad 1 odd number \color{#3D99F6}1 \rightarrow \text{odd number} 2 even number \color{#D61F06}2 \rightarrow \text{even number} 3 odd number \color{#3D99F6}3 \rightarrow \text{odd number} 4 even number \color{#D61F06}4 \rightarrow \text{even number} 5 odd number \color{#3D99F6}5 \rightarrow \text{odd number}

On observing the above pattern, 0 should be an even number .

Method 4 : even ± even = even \text{even} \pm \text{even} = \text{even} 2 2 = 0 \large 2 - 2 = 0

Hence, 0 is an even number .

Is zero a number? I've always thought of it as a symbol to represent that nothing is there! It is placed in the middle of a number to represent the place value and tell us that it's actually there. However a zero is nothing. It can't be even nor odd! Any feedback?

Moh Gamil - 5 years, 7 months ago

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According to my discrete math professor, it is neither odd nor even.

Derrick Haines - 5 years, 7 months ago

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Your discrete math professor is wrong. An integer is even if and only if it equals 2n for some integer n. Clearly 0 = 0n = 2n when (and only when) n = 0: so 0 is even. An integer is odd if and only if it equals 2n+1 for some integer n. This can never be the case, because we always end up with a contradiction: 0 = 1, 0 = 3, etc.; or 0 = -1, 0 = -3, etc. So 0 is NOT odd.

Ian Shanahan - 5 years, 7 months ago

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@Ian Shanahan You forgot one thing. A number is even when it equals 2n and does not equall "n"'. Say I did the same thing with 4. 4 = 2(4) See? Not a true statement. 0 = 2(0) not because it is even but because it is zero.

Steven Mellard - 5 years, 7 months ago

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@Steven Mellard All other numbers are like that, true, but zero is special. Zero is the only number you can double, triple, quadruple, centuple, and get the same thing each time. So, because 0 = 2(0), zero is twice something, and is even.

Whitney Clark - 5 years, 7 months ago

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@Whitney Clark Is that an actual statement on anything? Sorry if I don't get it, but you're just not making any sense. There is no expanation to your result, at least some people actually try.

Cristobal Dupuis - 5 years, 6 months ago

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@Cristobal Dupuis Sorry, I'll try again. Zero times anything is zero. Zero times 2, 3, 4, or even 100, are all zero. It's the only number that you can multiply by anything and get itself. That doesn't mean it can't be even, though; why should it?

Whitney Clark - 5 years, 6 months ago

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@Whitney Clark first of all, that does not match what you said first. second of all, look at my solution.

Odin Wang - 10 months ago

@Ian Shanahan 0 is not a number, more of a state in between. A number must have a value, which is the exact same reason that infinity is not a number

Andrew Arthur - 5 years, 6 months ago

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@Andrew Arthur Zero does have a value. Zero is its value. If you add zero to whatever, the result is the whatever. If you multiply by zero, you get zero.

Whitney Clark - 5 years, 6 months ago

@Ian Shanahan So 1 = 3 because f#$k logic? That " s#$t or however it's called to do lateral thinking just doesn't work out. Cut it out! There are great ways to make creativity happen without making childern ignorant!

Cristobal Dupuis - 5 years, 6 months ago

According to my Discrete math professor, it is even by the definition of what an even number is, give by the formula n=2k, where n is an even number and k is some integer. Therefore, 0=2(0) because 0 is an integer. Wolfram recognizes 0 to be even, and I'll go with them over others any day. http://mathworld.wolfram.com/EvenNumber.html

Emily Grice - 5 years, 6 months ago

I agree with your descrete math professor.

Cristobal Dupuis - 5 years, 6 months ago

That's what I think as well. 0 can be an integer of any number and it will give a remainder of zero when divided by any number. Also odd - odd = even and odd + odd = even. The only way 0 can be said to be even is Method 3. I would say 0 is neither or a neutral number.

Roger Schaap - 5 years, 6 months ago

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@Roger Schaap So what's wrong with the other methods?

Whitney Clark - 5 years, 6 months ago

Maybe you misunderstood your discrete math professor?

Whitney Clark - 5 years, 7 months ago

I also believe it is a concept. It is not number.It is a starting point of measurement. It is neither + nor - . Is it not that 0dd and even numbers are concepts for building numerical patterns?

Sudhakar Jahagirdar - 5 years, 7 months ago

Zero is a number and is different from nothing. A practical example is when you fill out a form. Let's say it asks you how many children you have. If you leave it blank, it is unanswered. If you write zero, you have answered that you have no children.

Emmanuel Bouy - 5 years, 7 months ago

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Zero is the formal concept of nothing put into a symbol. In the legal form example the blank space is not so much "nothing" as "unknown" the blank is a variable like you see "x" does in so many algebra lessions.

Steven Mellard - 5 years, 7 months ago

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@Steven Mellard But zero is known to be nothing. And if you have two nothings, you have nothing, so zero is even. And if you have two of anything, positive or negative, and add a unit, you don't get zero, so zero is not odd.

Whitney Clark - 5 years, 7 months ago

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@Whitney Clark 2 of any odd or even is even. Argument's invalid.

Cristobal Dupuis - 5 years, 6 months ago

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@Cristobal Dupuis You are presuming -0- is either odd or even in order to multiply it by 2, getting -0-, then declaring -0- to be even. If -0- if neither even or odd, then multiplying by 2 does not automatically make the result even.

Jeff Barrett - 5 years, 6 months ago

@Cristobal Dupuis The first part of your statement is true. What was invalid, then?

Whitney Clark - 5 years, 6 months ago

That answer sealed it for me. Great reply!

Abinav BASKAR - 5 years, 7 months ago

While i can see where you're going with that. If you answer the question with a line, or Eden n/a you're still answering the question. But the answer to whether 0 is even or odd still goes begging.

Aaron Oehler - 5 years, 7 months ago

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@Aaron Oehler Why should it? Does "even" mean a multiple of two or not? And if so, zero's even. But if not, why not? Does it mean "nonzero multiple of two" instead? Why? Why should it be so complicated?

Whitney Clark - 5 years, 7 months ago

@Aaron Oehler Agreed. As all the examples in the actual "Answer", I find it a lousy example not proving anything but an opinion. Be objectives here, guys!

Cristobal Dupuis - 5 years, 6 months ago

How can "nothing" be a number? I was taught that 0 (zero) was a place holder. Of course, you have to put something in that space if asked "how many children do you have" or else it gets sent back as incomplete.

William Nicolas - 5 years, 6 months ago

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@William Nicolas "Nothing" is not a number, but zero is. You don't have "nothing" dogs if you don't have any, but you have zero dogs.

Whitney Clark - 5 years, 6 months ago

@William Nicolas It is a number as a representation of something that does not exist. Thus, I agree with you. If I say 0, it's as of no number represents what it i. 0.0000001 is a number though, as it acually f!"##$%&ng exists!

Cristobal Dupuis - 5 years, 6 months ago

Well see at the end you said that zero is nothing, but its not like that. Zero represents nothing, but it is something. You get it?

Bryan Chin - 5 years, 7 months ago

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Totally agree. But as 0 represents nothing, I don't think it can be compared to something that represents something. It's not comparable to other numbers, as you are putting it, thus, 0 is neither an even or an odd.

Cristobal Dupuis - 5 years, 6 months ago

Agreed. 0 is neither positive or negative, nor even or odd. I have no idea how they got to 0 being even.

Kelsey Beck - 5 years, 7 months ago

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Read Akhil Bansal's post and you'll get the idea.

Whitney Clark - 5 years, 7 months ago

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@Whitney Clark Oh, I absolutely get the idea. Still think it's wrong though, arguments are completely biased and some are even true for odds. hence an odd is even? Or does it just makes his argument invalid?

Cristobal Dupuis - 5 years, 6 months ago

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@Cristobal Dupuis Not so; none of them are true for odds. Which ones do?

Whitney Clark - 5 years, 6 months ago

I have an idea... They do give some examples, although they don't actually make sense. Get your facts straight, dude!! (sorry, sarcasm)

Cristobal Dupuis - 5 years, 6 months ago

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@Cristobal Dupuis Sarcasm is not an argument.

Whitney Clark - 5 years, 6 months ago

It can neither be odd or even. Moh Gamil is correct as zero is traditionally a mathematical figure that poses as a placeholder for larger numbers. After all, having 0 dollars represents nothingness and thus does not exist.

Zach Burman - 5 years, 7 months ago

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If I have zero dollars, I have zero dollars. Am I not allowed to have zero dollars? Zero certainly does exist, or I'd always have a cell phone on me; but I have zero cell phones on me.

Whitney Clark - 5 years, 7 months ago

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@Whitney Clark zero does exist but it has no numerical value so it cant be even or odd

Michael McCracken - 5 years, 6 months ago

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@Michael McCracken Zero IS its numerical value. If you multiply seven by zero, you get zero; it's not true that you don't multiply seven by anything, getting back seven.

Whitney Clark - 5 years, 6 months ago

@Whitney Clark Thus there is no cell phone, making the cellphone unexistant, doesn't it?

Cristobal Dupuis - 5 years, 6 months ago

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@Cristobal Dupuis The cell phone is nonexistant, but the number is zero.

Whitney Clark - 5 years, 6 months ago

Zero is a number. If you just take the fundemental reason for numbers was to count objects (food, kids, ttees, etc.), then zero just let's a person know they do not have any of something.

Timothy Slaght - 5 years, 7 months ago

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If zero was a number it has to show the mathematical interconnection of the all other numbers but it doesn't. ie: 1+1 > 1 but 0+0 = 0 and so on. Not being a number we shouldn't confuse it with being either odd or even.

Kaveh Hooman - 3 years, 6 months ago

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@Kaveh Hooman How does that show that it isn't a number? If I have zero hours until my next class, then my next class has begun already. If I have zero dogs in my custody, then I have zero reasons to buy dog food.

Whitney Clark - 3 years, 6 months ago

Yeah you can be right but give logical reasoning..

annu riz - 5 years, 6 months ago

Have you gone crazy... Zero is the biggest invention in mathematics.. Its a whole number, real number, complex number .. And you are saying that zero is not a number.

Akhil Bansal - 5 years, 7 months ago

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Actually zero has more in common with infinity than the integers because it is a concept of nothingness. Logically, can you split nothingness into two groups of nothingness with no remainders? Not really and it seems weird to think about because it is an abstract idea.

Steven Mellard - 5 years, 7 months ago

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@Steven Mellard Weird, yes, but true. Ever hear of Simpson's Paradox? It's a veridical paradox; it seems to defy intuition, but is still true.

Similarly, yes, you really can logically split one nothing into two with no remainders. Why not? Zero plus zero is zero - or am I mistaken? And yes, zero is abstract - most numbers are. Have you ever seen a "googol" ( 1 0 100 ) 10^{100}) of something? I think not. And yet it exists as a mathematical concept.

Whitney Clark - 5 years, 7 months ago

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@Whitney Clark One "googol" Atoms....every time you look at something

Tim Yates - 5 years, 6 months ago

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@Tim Yates Actually, all we humans can observe is ( 1 0 82 ) 10^{82}) atoms - though not individually, generally.

Whitney Clark - 5 years, 6 months ago

@Steven Mellard Yup agree.. So is -2 an even number?:|

Lajpat Bishnoi - 5 years, 6 months ago

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@Lajpat Bishnoi Yes it is. It is 2 times -1.

Whitney Clark - 5 years, 6 months ago

I totally agree.....0 is a symbol for nothing. However, in math on a graph....it becomes an object hence even....but still NOTHING!

Frank Detman - 5 years, 7 months ago

I put nothing also, I did most of these solutions before deciding, "nah it wouldn't be that easy" ...

Louis Kinden - 5 years, 7 months ago

Zero is a neutral number therefore it can't be even, odd, positive, or negative.

jack guzan - 5 years, 7 months ago

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It can't be positive or negative, that's true. Neither odd. But why can't it be even? What is the definition of the term?

Whitney Clark - 5 years, 7 months ago

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@Whitney Clark To be even the number must be able to be split into two groups with no remainders. The confusion comes because when you think of zero you might be tempted to think of the 0 in the number 10. Unlike ten zero is a concept of nothingness. You can't split zero into two groups because there are no groups.

Steven Mellard - 5 years, 7 months ago

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@Steven Mellard Of course there are! It's just that both groups are empty. If I had zero jellybeans I wanted to share with a friend, I wouldn't give him any! Now we both have zero! Zero is evenly divisible by two, hence even!

Whitney Clark - 5 years, 7 months ago

@Whitney Clark Then why can't it be odd?

Cristobal Dupuis - 5 years, 6 months ago

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@Cristobal Dupuis An odd number is not even, but still whole. Or, an odd number is one more than an even, or one less. Zero fits none of these descriptions.

Whitney Clark - 5 years, 6 months ago

0 (zero; BrE: /ˈzɪərəʊ/ or AmE: /ˈziːroʊ/) is both a number[1] and the numerical digit used to represent that number in numerals. It fulfills a central role in mathematics as the additive identity of the integers, real numbers, and many other algebraic structures. As a digit, 0 is used as a placeholder in place value systems

Angie Curley - 5 years, 7 months ago

So if 0 represents nothing does that mean that every other number represents something is there are numbers digital?, either 0 or 1, nothing or something. It is not depend on how the numbers are used, in a sequence 0 is a step in the sequence therefore it has a value of 1 where 10 has no value as it is the first step...now if its a step it has a value but as you havnt moved and merely established a datum, which is always zero, so therefore 10 has no value. 96% of the universe is nothing but it is still there and still has a value. You can measure nothing and give it a value....0 so therefore it must be something.

Damy Findley - 5 years, 7 months ago

every number has its value because of zero, that is the starting point

Jorgo Caka - 5 years, 7 months ago

Well folks you're all right. Zero is zero! It's nothing. But technically according to the definition of real numbers and even numbers, zero turns up as a milestone in the way and an even number too.

Gurdyal Singh - 5 years, 7 months ago

I almost got it wrong because I was thinking of the rule of prime numbers- 1 is neither composite nor prime, so deductively 0 can't be even or odd, especcially since, as you said, 0 is essentially nothing. But actually it is even since it can be divided by 2, which makes any number, regardless of its value, even.

Emna Sellami - 5 years, 7 months ago

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God, every number can be divided by 2. The result varies, but 1 can be divided by to, can't it? It's actually 0.5! omg!

Cristobal Dupuis - 5 years, 6 months ago

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@Cristobal Dupuis Yes, but you can't divide one by two and get a whole number.

Whitney Clark - 5 years, 6 months ago

I'm going to input this - if they're stating that 0 x 2 = 0 it becomes an even integer, why don't they mention that this statement contradicts itself when you present 0 x 1 = 0 as an odd integer, being that it is a multiple of 1 as well. This is a 2 sided story dependent on how people think.

Joshua Wise - 5 years, 7 months ago

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Actually, no. Multiply two by anything, and the product is even. But 6 x 1 = 6 and 5 x 1 = 5, so multiplying by 1 just gets you the same, which can be odd or even. Everything's a multiple of 1. Those are two different things.

Whitney Clark - 5 years, 7 months ago

exactly...it should be niether.

john philip-sousa - 5 years, 6 months ago

Your right it's not a number there for it can't be even or odd. a number plus it self is an even number bet that dose not mean that a number minus it self is even. and then there is the pattern example. the pattern starts at on not zero because zero is not a number. and then any thing times zero is zero. even or odd.

Michael McCracken - 5 years, 6 months ago

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0 is a number in terms of definition. It represents something, this something being nothing. I agree it's neither even or odd, but '0 is most certainly something. Having 0 apples means you are using a quantity measure as for no apples. Represents nothing, but still is a number.

Cristobal Dupuis - 5 years, 6 months ago

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@Cristobal Dupuis But if it's a number, why can't it be even?

Whitney Clark - 5 years, 6 months ago

Zero certainly is a number; it's the only number that correctly answers, "How many elephants are in this computer lab?"

Whitney Clark - 5 years, 6 months ago

I agree up to a certain point. Aslso, even+-even =even? wtf is that? it's also true for odds! Lousy arguments in general. I think it's up to perceptions. 0 is a number and not a concept, but as 0 literally means nothing, then it's neither an odd or even. That's my poing of view. Any number can also said to be even if it gives remainder 0 when divided by 2??????? According to whom? brilliant.org! the argument about 0 is not just about logic. This is the worst "exercisse" or whatever you can call it I've seen here.

Cristobal Dupuis - 5 years, 6 months ago

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I don't know when this argument took place as I can't see the dates. Probably many months ago but that doesn't matter.

What the hell were you thinking? All the arguments and proofs were already provided and you still wanted to argue on this? You should be the one being told to be objective . The arguments are definitely not biased. You know who's biased here and just giving opinions? You . You're the one who gave lousy arguments. You literally even said "that's my point of view". Opinions, right there.

Kenneth Choo - 4 years, 11 months ago

Not so; 7 + 5 = 12 and 7 - 5 = 2, so odd +/- odd = even.

Whitney Clark - 5 years, 6 months ago

0 ÷ any number causes error. So as 0 ÷ 2! If a number cant be divided by 2, how come it's even?!

Vanessa Chan - 5 years, 2 months ago

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Wrong. Zero divided by two is zero. That's not the same as dividing by zero. What error is there is dividing zero by something?

Whitney Clark - 5 years, 2 months ago

No zero is not a number. The correct answer is neither

Donovan Blackwell - 5 years, 6 months ago

Zero is not a number. It is the absence of a number. When a sporting event is 0-0, it is said that their is "no score".

Kerrie Jaques - 5 years, 7 months ago

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0 is definitely a number. It's a number that represents nothing. like 1 is a number that represents a single of something. The question is not "is the number 0 even or odd" the question should be if you have no oranges, do you have an even or odd amount of oranges?" interpretation of the question leads you down one of two paths.

Chris Lesmerises - 5 years, 7 months ago

You are wrong, Kerrie: no one ever says there is no score as long as there is an entry on the scoreboard; 0-0 means that the score (which is a number) is nil all. Also, since odd and even numbers alternate in a straight count, as much as 1-3-5-7-9 are odd numbers, then 2-4-6-8-0 are even numbers. In multiples of ten, we place 1 or 2 or 3 or 4, etc., in front of 0 to make 10 or 20 or 30 or 40, etc., which are all even numbers ending with zeros.

Clyve Bowen - 5 years, 7 months ago

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@Clyve Bowen However it's not zero that is even here but 10, 20, 30,... Here zero is acting as a place holder.

Steven Mellard - 5 years, 7 months ago

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@Steven Mellard It's not a place holder. There are no ones in any of those numbers. You can't replace them with anything or you get a different number.

Whitney Clark - 5 years, 7 months ago

@Clyve Bowen Thank you for proving my point Clyve. Firstly, people say there is no score regularly. And by your logic, if one team has scored but the scoreboard is broken, then there is no score. Is there even a game in that case??? If you look up "nil" in the dictionary, is means nothing or "having no value or existence". So thank you. And if you want to talk multiples of 10, then 0 is there basically as a place marker. It is there in the absence of a number, as if to say, "this figure is here to inform you that this is a multiple of 10". It's like when you lose a checkers piece, so you use a coin. It may represent a checkers piece, but it most certainly is a coin.

Kerrie Jaques - 5 years, 7 months ago

I agree. Zero is not a number.

Jeff Blessing - 5 years, 7 months ago

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9-7=2

5-5=0

Why cannot all five of those -- 0, 2, 5, 7, 9 -- be numbers? It's a fact of higher mathematics.

Whitney Clark - 5 years, 7 months ago

Good solution

A Former Brilliant Member - 5 years, 7 months ago

None of these methods are legit. You cannot divide or multiply by zero, because there is nothing to divide or multiply by. Method 3 is just as ridiculous. Method 4 applies to numbers other than zero since zero is neither even or odd.

Michael Henry - 5 years, 7 months ago

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Yeah, and atheists "know" there is no God. Good grief.

You can most certainly multiply by zero; zero times anything is zero. Why would you say otherwise? Zero is a number, not the absence of a number.

Why should Method 4 apply to numbers other than zero? That sounds like circular reasoning to me. Mathematicians like to extend patterns as far as possible, so if two minus two is not even, there should be a good reason for it.

Whitney Clark - 5 years, 7 months ago

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First, not an aethist if you are trying to make the association. Second, Not what I meant, yes you can multiply by zero, but because it has an integer multiple of two, zero is even, makes no sense. Every number has an integer multiple of two. Third, method 4 doesn't work because odd +- odd = odd. 1-1 = 0 even +- even = even 2-2 = 0. How can 0 be even and odd? It can't. Fourth, method 2 has the same flawed logic. Any number even or odd when divided by 0 is 0 and has a remainder of 0.

Michael Henry - 5 years, 7 months ago

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@Michael Henry Odd+- odd = even

Eric w - 5 years, 7 months ago

@Michael Henry Odd +- odd I'd even, people. 1 + 1 = 2, 7+5=12 , 57-27=30, etc. Only odd +- even, or vice versa, is odd

Brandon Stone - 5 years, 7 months ago

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@Brandon Stone And 1+0 = 1 would indicate even 2+0=2 would indicate even.

I still say its a place holder, of no numerical significance on its own... But it derives its vale fro. What is to it's left.

Alan Dike - 5 years, 7 months ago

@Michael Henry The mathematical definition of an even number is any integer divided by 2. 0/2=0 since 0 divided by 2 is 0, by definition of even 0 is an even number. The first method is actually just a rewritten method of the definition of an even number while the second is the definition. The third and forth are also rewritten versions using the definition of even and the definition of division and multiplication. Even-even=Even, odd-odd=even. Any number minus itself will always get 0 and will always result in an even number.

Dylan Ruff - 5 years, 7 months ago

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@Dylan Ruff Help me out here: isn't any odd number divided by zero ALSO zero? Same for multiplication. Moreover, any number -/+ zero is THAT number. The sum, product, quotient, difference, is the answer, NOT that math problem's parts. Intuitively, that makes it more both than neither.

Kevin McGreer - 5 years, 7 months ago

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@Kevin McGreer Nope, division by zero is nonsense. (But yes, multiplication by zero gets zero.)

Whitney Clark - 5 years, 7 months ago

@Michael Henry Nope, not trying to make that association at all, just draw a comparison. Sorry, I forget sometimes that religion and other things are not for a forum like this.

Whitney Clark - 5 years, 7 months ago

The problem is zero is not a number and therefore it is neither even nor odd.

Tanner Tolman - 5 years, 7 months ago

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The problem for you my friend is that 0 is a number. Think of the equation 2N + 1 that will always result in an odd number being N an integer. Now, use 0 = N and solving the equation 2.0 + 1 = 1 which is an odd number, therefore proving that 0 is a number.

Bryan Chin - 5 years, 7 months ago

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0 is an even no. And it's neither positive nor negative, I guess some ppl are confusing positive ,negative with even , odd,that's why its a good tricky question.

shreyasta samal - 5 years, 7 months ago

I have to agree with Family, 0 is a written representation on nothing when used alone. However in all the equations posted it is the effect of the other integers withing the equations that give it a even standing. So essentially it is technically it is both even and nothing depending on where and how it used.

Tony DeChristopher - 5 years, 6 months ago

Actually a mathematician teacher of mine told me that zero is even by definition because it is useful for us that way, that's what I think too

Daniel Pacheco - 5 years, 7 months ago

Good solution! It's very clear. I always grew up with teachers telling me that zero was neither, but I see your reasoning.

Claire Meng - 5 years, 7 months ago

0 is an integer on the real number line . Anyone not starting from this point, anyone who says 0 isn't an actual number, that it's only a concept or place holder, you are starting from a false assumption.

The formal proof of an even interger n, is "If n = 2(k) for some integer k, then n is an even integer." The proof does not say anything about k not being equal to n.

Nick Tiry - 5 years, 3 months ago

42% people got it right :3

Arulx Z - 5 years, 7 months ago

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How is that possible? Do they not know their definitions?

Whitney Clark - 5 years, 7 months ago

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The posts on this thread are among the weirdest ones I've ever seen on Brilliant

Arulx Z - 5 years, 7 months ago

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@Arulx Z Kinda reminds a person of "Contrafactus", in Godel, Escher, Bach , by Hofstadter. Or a politician or something. Some things can only be made so simple.

Whitney Clark - 5 years, 7 months ago

That's what puzzled me

Arulx Z - 5 years, 7 months ago

This looks alot like microeconomic functions...

Jonathan Jaworski - 5 years, 7 months ago

what about one same phenomenan happens to 0 with 1 how can you explain it with this example

Adnan Ali - 5 years, 7 months ago

0 is definitely a number, however... It's a number that represents nothing. like 1 is a number that represents a single of something. The question is not "is the number 0 even or odd" or use the word "number" once, leaving us to jump to the conclusion it is asking about the number. Perhaps this is a question about the concept of 0 and the question should something like "If you have no oranges, do you have an even or odd amount of oranges?" interpretation of the question leads you down one of two paths. personally, I don't have an even amount of oranges, or an odd amount of oranges. I have none.

Chris Lesmerises - 5 years, 7 months ago

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But "none" is zero, and zero is even. That you have zero of a lot of things, such as dragons under your command, or magical spells you can cast like Harry Potter, doesn't mean you can't refer to them as zero, an even number. Who cares if you can't refer to all the zeroes in your life as even numbers; they still are.

Whitney Clark - 5 years, 7 months ago

I wonder if you replace all two above with 2n+1

FinthDark ko - 5 years, 7 months ago

People People this is really all very simple to prove obviously if you if you take N and divide said integer by 0 you prove 0 is an even number, an odd number, and the color blue. Case closed.

Cordin Shumway - 5 years, 7 months ago

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With all due respect and then some, sir, I think you're nuts.

Whitney Clark - 5 years, 7 months ago

Even/even is = a no. But what about n/0 = ? Indeterminate why ? If it satisfies those funny patterns it fails here.

Anshul Srivastava - 5 years, 7 months ago

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Not indeterminate, just undefined. You cannot divide by zero. Exactly how many zeroes make one? Exactly how many make zero? The first is impossible, and the second has no unique answer, so 1/0 and 0/0 don't exist.

Whitney Clark - 5 years, 7 months ago

Zero is considered as Special number ! not even / odd !

Hardik Thaker - 5 years, 7 months ago

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Yes it's special, but it's also even, being evenly divisible into two groups of zero. Why shouldn't it be?

Whitney Clark - 5 years, 7 months ago

Even plus even is even Odd plus odd is even Even plus odd is odd But odd plus 0 is odd and even plus 0 is even. Thus we have 0 as both thus it is a contradiction since it cant be both as other rules dont hold true. thus it is neither.

Samuel Carey - 5 years, 6 months ago

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Since odd plus odd is not odd and even plus odd is not even, zero cannot be odd. Where is the contradiction? You replace "zero" with "even" in those statements, the result is true; use "odd" instead, and it's false. Zero is even.

Whitney Clark - 5 years, 6 months ago

I think that for this subject we must get out of the theorical field and stretch it out to the physical field. First of all, let's review why the numbers we know have the symbol we use to represent them. Easy, their primitive symbology represented the ammount of angles they got, thus the circle itself has no angle, therefore it represents the absence of something or the absence of the total number of something, because naturally it is nothing. But what about even numbers which last number is 0? Aren't they even? Indeed! But, this is just a way to tell that number is even, even though we have no other numerical symbols for this purpose. I know how to represent nine and eleven, but what about ten? And the physical part regards the simple idea of making a pair with 0. You can make pairs with even numbers, that's what the equation 2n suggests, but can you make a pair with nothing? I guess not! And you cannot consider 0 a single unit because it is not.

Igor Da Costa Dos Santos - 5 years, 6 months ago

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Simply enough, it's just a pair of nothings.

Whitney Clark - 5 years, 6 months ago

that means 0 is even number.right?

Hafiz Al Riyad - 5 years, 6 months ago

For your kind information, 0 is both even and odd number, on the other hand, 0 is not a number, it’s a position, it's a position of ultimate parity or balance. There are numerous angel of view or way to define anything but absolute truth is unique thing which is unchangeable and undeniable. Actually, 0 means nothing as well as everything; it contains all the positive and negative numbers along-with all the odd and even numbers. the ultimate theory of the universe is the "theory of balance" which is 0. there was 0, there is 0 and there will be 0. we came from 0 and we will be abolished to 0. everything in this universe has an opposite existence like opposite of 1 is -1, opposite of good is bad, opposite of positive is negative, but what is the midpoint? The midpoint is 0; it is a position, where all are equal or the position of ultimate parity. Thanks. I beg your apology for my amateur writing skill.

Mostafa Hira - 5 years, 5 months ago

I would think for a number to be even, it would have to be divided in half equally and end up with 2 equal halves. Since 0 cannot be divided into anything, it is not even. Nor is it an odd number because it cannot be divided into parts with one greater and one less. Zero represents the absence of a countable notation, therefor it cannot be odd or even. It is not subjected to the same rules as a divisible number, such as even the number 1, which when divided perfectly in half, you have .5 . But this brings up another situation of numbers such as 3 or 9 or even 15 and so on, which can be divided into halves. So in the end, does it have to be divided into 2 whole numbers to be considered an even number? ! is odd, 2 is even, 3 is odd, and so on. Lets just leave it at that, and consider 0 as having no value, but of having the most important value of all. Kind of a Schrodinger's cat type deal, kind of not.

Ronnie Mullis - 5 years, 3 months ago

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Hi, you seem to have made a mistake. We are not dividing zero into anything, but dividing it by something: namely, two. Zero divided by two is zero, with no remainder.

Whitney Clark - 5 years, 3 months ago

I thought an even number k was defined as k=2n , where n is an integer and n>0. According to the solution of this problem I was wrong. So Is -2 even? I thought even and odd referred only to positive integers, which 0 is not.

Tim Popely - 2 years, 5 months ago

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I probably should have switched the n an k, but you know what I mean.

Tim Popely - 2 years, 5 months ago

But why should n be positive? I am not familiar with this rule.

Whitney Clark - 2 years, 2 months ago

What I am trying to say is that divisibility by 2 should be not the only way to categorise integers especially in the case of 0. For instance, when 0 is added to an even number the result is even but when it added to an odd the result is odd. Also, 0 is divisible by any number except it self and will give 0 when it multiplied by any number, hence, neither even nor odd. Thus, it is not enough to say whether if 0 is even or odd unless another category is introduced to integer numbers rather than divisibility by 2.

Abdul Aziz Abdul Majid - 2 years, 2 months ago

When playing Roulette at the Casino, 0 is not even neither odd.

Julian De la Cruz - 5 years, 7 months ago

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That's because zeroes on the roulette wheel are easier to come by than something like Xs, the numbers don't mean numbers and cannot be added or subtracted, and those games are designed to favor the house anyway.

Whitney Clark - 5 years, 7 months ago

The fourth method makes no sense because by that same logic 0 is also an odd number example being 1-1=0

Bethany Carr - 5 years, 7 months ago

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Incorrect. An even +- an even is even. An odd +- odd is even. An even +- an odd is odd

Brandon Stone - 5 years, 7 months ago

It said nothing about odd numbers. The three numbers marked "even" are not necessarily the same or different.

Whitney Clark - 5 years, 7 months ago

You can apply the same logic for the odd numbers. On cases 1 through 3.

Leonard Stewart - 5 years, 7 months ago

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Wrong. Odd numbers aren't multiples of two, they aren't divisible evenly by two, and they aren't sandwiched by two odd numbers.

Whitney Clark - 5 years, 3 months ago

You've just explained why is it (even) ,but that doesn't mean that the answer is (even) because one of the choices is (both) ,so you must also disprove that it is an odd number applying it to the rules of the odd numbers

Omar Mohd Qaisieh - 5 years, 7 months ago

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An odd number is 2n + 1. Let n satisfy 2n + 1 = 0. Then 2n = -1, or n = -1/2, which is not an integer, so zero is thus not odd. QED.

Whitney Clark - 5 years, 7 months ago

So I have a problem with all the methods, any number times or divided by 0 is going to be 0. And also any number subtracted by itself is going to be 0, I don't see how you think 0 is even but everyone thinks different, but I'll stay with 0 as in nothing bc when you are talking to someone and they ask you how many cows do you have, and you have 0 you say none

Michael tilton - 5 years, 7 months ago

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You cannot divide by zero at all, actually. And zero is definitely even, because it can be evenly divided into two groups of zero, just like 14 can be divided into two groups of seven, or 92 into two groups of 46. It's a number and fits all the patterns, so why shouldn't it be even?

Whitney Clark - 5 years, 7 months ago

why would zero be a odd number because even me looking at the diagrams shown on screen for me it still does not make sense why zero is an odd number it should be even because after all the maths degreese i ahve done it is an odd number i eve got taught that at my degree when i went to oxfordshire university in GREAT BRITAIN

Samuel Creed - 5 years, 6 months ago

In all the methods a presumption is used that if results are 0 then the multiplied is even. A tautology

Satyabrata Biswas - 5 years, 3 months ago

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Not a tautology. Try it out with anything else.

Whitney Clark - 5 years, 3 months ago

0 has multiple definitions. If it is a number you can say it it even. However, it is not a number if you consider it a place holder to indicate the absence of a number as was done before the invention of a 10 based number system as well as in the early beginnings of its inception.

Andy Calhoun - 5 years, 3 months ago

Zero is not a number neither a magnitude It is just a symbol that shows direction of a directionless quantity Because if it was a number then zero number is also equal to zero.

Muhammad Haris - 5 years, 7 months ago

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But that is right, zero number is also equal to zero. Why shouldn't it be? If you subtract five minus five, why cannot the result be a number?

Whitney Clark - 5 years, 3 months ago

If you try method 2 the other way around, 2/0 = infinity (undefined). Infinity is not considered a number and is neither even nor odd so zero breaks that rule.

Alistair Bailey - 5 years, 7 months ago

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Begging your pardon, but there IS no "other way around" for that. You divide zero by two, not two by zero. That's just nonsense.

Whitney Clark - 5 years, 7 months ago

This ain't a question about mathematics, but about philosophy. "0" is our symbol for "nothing", or something which has no determination. Something without any determination is nothing, but it's also something, it's opposite, the being. But being without any determination is again nothing, which, by itself, is being once again. Then, we can conclude that 0 is both odd and even: it's odd when considered in it's identity with itself, and it's even when it's considered other when related to itself again.

Marcelo M - 5 years, 7 months ago

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That's one way to make a Chewbacca defense.

The fact is, though, zero is still a number. Six times zero is zero, because if you have no sixes, or six nothings, you have nothing. It is not six, obtained by not multiplying six by anything. Math has to be consistent.

Whitney Clark - 5 years, 7 months ago

i think 0 is divisible in all integer numbers, so i think it is both??? any feedback?

Chester Agsamosam - 5 years, 7 months ago

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But "odd" doesn't mean it's divisible by anything. Not all multiples of 3 are odd; not all multiples of 7 are odd; and not all multiples of 31 are odd.

Whitney Clark - 5 years, 7 months ago

Its neither.. Does zero have + or - ? The same as odd or even.. Neither bro neither

Keenvin kaya - 5 years, 6 months ago

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But you don't put "odd signs" or "even signs" in front of numbers, do you?

Whitney Clark - 5 years, 6 months ago

Isn't zero infinite and undefined? My thought process was if it's undefined, it's both

Jonathan Jaworski - 5 years, 7 months ago

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What do you mean by zero is infinite?

Arulx Z - 5 years, 7 months ago

Zero is not infinite. An infinite number you will never run out of, while zero you are out already. Zero is not undefined. It is the only number you can add to something, or add something to, and get that something.

Whitney Clark - 5 years, 3 months ago

1,2,3,so on are alo can be the itegral number of 0. secondly 5-5=0 than how is it not odd number?

Yousaf Khan - 5 years, 7 months ago

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With all due respect, sir, what does that even mean? I can't understand it.

Whitney Clark - 5 years, 7 months ago

0 is a number that represents nothing, it cannot be even or odd.

Michael Henry - 5 years, 7 months ago

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Why can't it be even, then? The some of two nothings is nothing, so zero is evenly divisible by two; it is even.

Is something wrong with my reasoning? If so, then what is it?

Whitney Clark - 5 years, 3 months ago
Cesar Diniz
Nov 1, 2015

Most of you guys saying zero is not even, are actually confused with the definition of number. First lets be clear with the definition of number. After that, we need to know that any integer, negative, positive or the zero it self can be classified as even or odd, without losing its cacharacterist of existing as number. Another confusion is the social meaning of 0 and negative numbers, eg we cannot divide -1 patatos with 2 kids, or 0 oranges divided to 1 kid, as the social meaning of both operations leaves no patatos to no kids,becaus of it we tend to say that such thing is not possible. But well, it is mathematically possible, just as -1 patato is odd, 1 is odd, 0 is even and they are all numbers

I was taught zero is a place by holder.

Mark Spencer - 3 years, 11 months ago
Seán Vaeth
Nov 1, 2015

The definition of an even number is as follows: Z(even) = 2n That is if a number can be represented as a multiple of 2, it is even 2(0) = 0 Therefore 0 is even

Might I add that I believe 0 is neither, as you can make the argument that every number is a multiple of two, whether the origin of multiplication was an integer or not. This is sort of related to the idea of infinity. As many people like to believe, infinity is not a "highest number". Instead, it is the idea of all numbers within the entire realm of numbers. You cannot call infinity positive or negative, or even or odd, as it is not how far away the number is from 0, it is rather all the numbers that set has. Like infinity, 0 is a sort of anomaly, as 0 can fit into all parameters of multiplication and division clearly, but does not allow for a new, resulting number from any possible term, simply because of the rule "0 multiplied by any number is 0".

SAMUEL LAFFIN - 3 years, 4 months ago
Abhinandan Patil
Nov 29, 2015

When we put 0 after odd number the value become even. That's why,

Pro Cash
Nov 1, 2015

I look at it this way. If 2, 4, 6, 8... are even numbers then 8, 6, 4, 2 series would also be correct. And after 2 in that descending series, it is 0. Hence 4, 2, 0 are even numbers.

Jovylle Bermudez
Oct 31, 2015

even is when divided to 2 it always has 0 remainder 0 / 2
%=0

Even and odd is for natural numbers and 0 isn't one. Wrong answer. It behaves as an even number but it isn't one

Akhil Krishna - 5 years, 7 months ago

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The even numbers form a group in the integers under addition. If we consider this, then zero is even.

Jason Adoniz - 5 years, 7 months ago

Not sure how you reason that. The pattern can be extended to all integers, so zero is definitely even. Why shouldn't it be? As Akhil Bansal pointed out, it has everything in common with even numbers. Besides, I've heard some mathematicians define the natural numbers to include zero.

Whitney Clark - 5 years, 7 months ago

To respond to this simply: if it looks like a duck and quacks like a duck, it's probably a duck. 0 looks and acts like an even number. All numbers ending in 0 are even. An even number ends in an even digit. And all the proofs above show that it looks and acts even. So it is a duck. Sorry. I mean it is even.

Brandy Lee - 5 years, 7 months ago
. .
Mar 20, 2021

0 ÷ 2 = 0 0 0 \div 2 = 0 \cdots 0 .

Vivek Kushwaha
Oct 10, 2020

When 0 is divided by 2, the resulting quotient turns out to also be 0—an integer, thereby classifying it as an even number.

Odin Wang
Aug 13, 2020

take 10 for example. 10 is considered an even number, and if it is even or odd is decided upon the units digit. Therefore, 0 would have to be even.

Kavita Kumari
Dec 10, 2019

Zero is even as it can be factorised into

0 = 2× 0

Because even even = even \text{even}-\text{even}=\text{even} so 2 2 = 0 2-2=0 since 2 is a even number and hence 0 is even

Munem Shahriar
May 16, 2017

0 is an integer multiple of 2 , 0 × 2 = 0 . Therefore , 0 is a even number.

Subrata Mitra
Mar 16, 2017

zero is an even number.

Vineet PaHurKar
May 21, 2016

Even A number divided by 2 is said to be even So,we say that 0 is divided by any thing except 0 it result 0 So when we divided 2 from 0 result 0...

Nacho Loureiro
Feb 28, 2016

All odd numbers can be written like n = 2*k being k a natural number. Similarly all even numbers can be written n=2k. In this case. In irder to fulfill your req 0 = 2 * 0 thus being even

Desiree Brown
Nov 29, 2015

0 is even because the even numbers end in 2, 4, 6, 8, or 0

Dale Adamson
Nov 29, 2015

Zero is an even number by every possible explanation. I have seen so many misconceptions in here that it is frightening. Let's start with this: zero IS a number and DOES exist. Zero is a whole number, integer, rational number, real number. The concept of "does not exist" does not apply. Can you point to zero in a number line?...then it exists. Secondly, all integers are odd or even by definition. Thirdly, even if you ignored the mathematical definition of even vs odd there is a clear pattern: odd, even, odd, even, etc. Without zero there would be consecutive numbers that are odd in that pattern (1 and -1). Fourthly, zero meets the mathematical criteria for an even number... That is it is divisible by 2 such that the integer is equal to two times an integer (for example 24=2(12), thus 24 is even). Because zero is divisible by two it must be even.

Finally, if you do not agree with brilliant or anything said here... Try a Google search. Zero IS even.

Except that some of your points aren't very accurate. I can write down the sqrt. of -1 and put it somewhere between -1 and 0, but that doesn't make it a real number. As for your point of pattern, it could easily start with the 1/-1 spot, OR simply be odd, even, odd, neither, odd, even, odd. When you're dividing 0 by anything, you're not actually performing any action, since 0 has no value. Thus that 'division' wouldn't really determine whether or not it's an even number. Same for multiplication. You can 'multiply' it by any number, but because 0 has no value, you can't actually multiply it. You can multiply a number by 0, but multiplying 0 by a number doesn't really do much. In theory you're just swapping the numbers and multiplying that way. (Yes yes communative property etc. but that doesn't always apply in math)

Dakota Willingham - 5 years, 6 months ago

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Actually, the sqrt of -1 is an imaginary number and also can not be broken down to anything more than itself. It does not exist between 0 and -1. Whole different argument.

Jason Rivera - 5 years, 3 months ago

First, lets define "even numbers":

Even numbers are any integers that can be divided exactly by 2 (it means no remainder).

And if we say that zero is not an even nor an odd number, how can we prove that 0 divided by 2 is undefined.

So zero is an even number since 0 divided by 2 is 0 (no remainder).

Hemant Gome
Nov 8, 2015

0 is an even digit and a number. If you put an even digit at unit place of a number that number is even. e. g. 10,12,14,16,18,20,.... If you put an odd digit at unit place of a number that number is odd e. g. 11,13,15,17,19,21,...

Vashu Goyal
Nov 7, 2015

After a odd number a even number came and 1 is odd so this means that 0 is even

Veronica Golota
Nov 1, 2015

If I believe correctly then 0 is considered neither even or odd but as a 'special' number by itself to represent as many have said 'nothing'. For the point of this problem however, the reasoning behind why it's even:

Even is a number that can be divided into equal shares of itself, for example 2 can be divided into 2 lots of 1. Following this pattern we can say that zero can divide itself into equal shares of zero aka nothing.

Nope. 0 is even. 0 is not odd.

Calvin Lin Staff - 5 years, 7 months ago

Even ---> 2x Odd ---> 2x+1 2.0=0 but 2.0 + 1 is never equal zero

2 X odd is an observation of yours, not the definition. Same goes for over half of the official answers. They are not definitional, they are just observational.

"Even" means equal across the board, like if there are two points on the board and each side has one, they are even. 2 is an even number. If there are 3 points on the board, split between two teams and it does not add up to the same, it is odd.

Even is a number that splits between two equally.

One could say that both teams have zero and it would be even. Zero split two ways gives both teams an even score. Therefore it's an even number.

Ryan Moore - 5 years, 7 months ago

Actually, an even can be 2x even as well. 6 x 2 = 12 is even.

Whitney Clark - 5 years, 7 months ago

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