Possible or impossible

Logic Level 1

$3 + 4 = 5$

Above given a wrong equation. Is it possible for you to place mathematical operators like $^2, \sqrt{\phantom0}, \text{etc}$ into the equation above so that it becomes true?

No Yes

6 solutions

Munem Shahriar
Aug 2, 2017

$3^2 = 9$

$4^2 = 16$

$9 + 16 = 25$

$\sqrt{25} = 5$

Anonymoose Wanijuice
Dec 3, 2017

3 + √4 =5 the simplest method.

Md Mehedi Hasan
Nov 30, 2017

We can input 2 squares and a root to correct the equation.

$\LARGE {\color{#D61F06}\sqrt{\color{#333333}3^{\color{#D61F06}2}+4^{\color{#D61F06}2}}}=5$

This is not correct.

$9 + 16 \ne 5$

Munem Shahriar - 3 years, 6 months ago

I put $5^2$

Md Mehedi Hasan - 3 years, 6 months ago

I was trying say that we need to make 5 not 25

Munem Shahriar - 3 years, 6 months ago

@Munem Shahriar – ok I have edited. you can clear it in question that we can only change in left side and have to be equal 5.

Md Mehedi Hasan - 3 years, 6 months ago

Saksham Jain
Nov 11, 2017

3 +square root of 4=5

3 +square root of 2=5

This is wrong. $3 + \sqrt2 \approx 4.414$ .

Munem Shahriar - 3 years, 7 months ago

thanks it was a typing mistake

Saksham Jain - 3 years, 7 months ago

Genis Dude
Aug 14, 2017

Just put the '√' in 4

Therefore,

The equation changes to

3+√4=5 ,which is correct

Sándor Daróczi
Aug 2, 2017

The equation is true $\pmod{2}$ , since

$3+4 \equiv 7 \equiv 1 \pmod{2}$

and

$5 \equiv 1 \pmod{2}$ .

That's a congruence, however, not an equation.

Zach Abueg - 3 years, 10 months ago

Yes, you are right. Although, in some point of view, it can be interpreted as an equation. At least I believe.

Sándor Daróczi - 3 years, 10 months ago

Possible or impossible

6 solutions

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