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Algebra Level 2

2 3 ( 2 3 2 ) 0 2 3 = 2 3 1 2 3 2 0 2 3 \huge \color{#20A900}{2^{3^{ \left( 2^{3^{2}} \right)^{0^{2^{3}}}}}}=\color{#D61F06}{2^{3^{1^{2^{3^{2^{0^{2^{3}}}}}}}}}

Is the equation above true or false?

True False Ambiguous Syntax error

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10 solutions

LHS = 2 3 ( 2 3 2 ) 0 2 3 = 2 3 2 9 × 0 = 2 3 9 0 = 2 3 \huge {2^{3^{ \left( 2^{3^{2}} \right)^{0^{2^{3}}}}}}= \huge 2^{3^{2^{9 \times 0}}} = 2^{3^{9^{0}}}= \boxed{2^{3}} .

RHS = 2 3 1 2 3 2 0 2 3 = 2 3 1 = 2 3 \huge 2^{3^{1^{2^{3^{2^{0^{2^{3}}}}}}}} = 2^{3^{1}} = \boxed{2^{3}} .

As LHS = RHS, the given equation 2 3 ( 2 3 2 ) 0 2 3 = 2 3 1 2 3 2 0 2 3 \huge \color{#20A900}{2^{3^{ \left( 2^{3^{2}} \right)^{0^{2^{3}}}}}}=\color{#D61F06}{2^{3^{1^{2^{3^{2^{0^{2^{3}}}}}}}}} is indeed true.

Moderator note:

Since exponents function work from the top to bottom, you can simplify your work by a little. Hint: look at the powers (or base) with 0 0 or 1 1 .

how ( 2^3^2) became 2 ^9 please understand

Hadia Qadir - 5 years, 8 months ago

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Because, when evaluating exponents, you work from the top down.

So, 2^3^2 = 2^(3^2) .

Since 3 2 = 9 3^2 = 9 , hence 2^3^2 2 9 \equiv 2^9 .

Adam Blakey - 5 years, 6 months ago

Notation no allowed I think error syntax you must use the ()) try in calculator

Taib Saad - 5 years, 2 months ago

@Karthik Venkata nice solution!!P.S:Where did u learn CS from?PLZ TELL!

Adarsh Kumar - 6 years, 1 month ago

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I learnt CS from past 2 years during summer holidays ( not much really ). The only programming languages I know are 'Wolfram Mathematica' and 'Arduino IDE'. There are tons of video tutorials out there on YouTube, go check 'em out, best of luck and have fun !

Venkata Karthik Bandaru - 6 years, 1 month ago

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ah!good for u!my internet balance is 2gb max so my dad doesn't allow me to watch videos anyway,thanx for replying!

Adarsh Kumar - 6 years, 1 month ago

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@Adarsh Kumar Well you can check out the ebooks, they are helpful too. I suggest you go through O' Reilly books !

Venkata Karthik Bandaru - 6 years, 1 month ago

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@Venkata Karthik Bandaru all right!!thanx a lot bud!!!

Adarsh Kumar - 6 years, 1 month ago

Adarsh Kumar, i can't get why 0^2^3 becomes 0...

Leomark Jay Romero - 6 years ago

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0 0 to any positive power becomes 0 0 again. I hope you are now clear about this.

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in my boook o raise to any power is undefined

am i right or wrong?

this is i the uk

kool guy - 5 years ago

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@Kool Guy By theory, it is undefined however in calculations and proofs we equate it to 0.

Syed Hamza Khalid - 2 years, 9 months ago

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@Syed Hamza Khalid No. 0 raised to any positive power is 0.
0 raised to any non-positive power is undefined.

Calvin Lin Staff - 2 years, 9 months ago

GOOD solution

Hadia Qadir - 5 years, 8 months ago

AT LHS it was 2^3^(2^9)^0 there is no multiplicaltion of nine and zero

Daniel Kua - 5 years, 8 months ago

anything to the 0 power is 1. 1 raised to any power remains 1. While I disagree with tha naswer of 8, the answer is ture: 1 = 1.

Tom Seubert - 5 years, 8 months ago
Feathery Studio
May 9, 2015

In the LHS, the part after the bracket is a power of 0 0 , therefore equalling 0 0 , and the bracketed part will be to the power of 0 0 , therefore equalling 1 1 . Then we get 2 3 \boxed{2^{3}} .

In the RHS, there has only been a 1 1 added to the chain of exponents, so the result will be the same.

Moderator note:

Yes, this is the solution I'm looking for. Good job.

i dont understand....

2 3 ( 2 3 2 ) 0 = 2 3 1 = 2 3 \huge {2^{3^{ \left( 2^{3^{2}} \right)^0}}} = \huge {2^{3^{ 1}}} = \boxed{2^{3}}

why isnt

2 3 1 2 3 2 0 2 3 = 2 3 1 2 3 2 1 \huge 2^{3^{1^{2^{3^{2^{0^{2^{3}}}}}}}} = \huge 2^{3^{1^{2^{3^{2^{1}}}}}}

Ne-ko Nya - 6 years ago

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Because 0 2 3 = 0 8 = 0 \large 0^{2^3}=0^8=0

Prasun Biswas - 6 years ago

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Prasun, 0 2 3 = 0 8 = 0 0^{2^{3}} = 0^8=0 .

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@Venkata Karthik Bandaru Damnit! Thanks!

Prasun Biswas - 6 years ago

What do you mean by LHS and RHS?

A Former Brilliant Member - 5 years, 5 months ago

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It's an informal shorthand for "Left hand side" and "Right hand side" of an equation respectively (refer to this article ).

Prasun Biswas - 5 years, 5 months ago
Wwt Manahan
May 15, 2015

This is really easy. Remember that a b c {a^b}^c is the same as ( a b ) c (a^b)^c . Remember that anything to the zero power is one, and one to the power of anything is one. Eliminating unnecessary daunting-looking bits of the equation: 0 2 3 = 0 2 3 {{{\cdots}^0}^2}^3 = {{{\cdots}^0}^2}^3 1 2 3 = 1 2 3 {1^2}^3 = {1^2}^3 1 3 = 1 3 1^3 = 1^3 1 = 1 1 = 1 That looks to be true, doesn't it?

Moderator note:

Wrong. a b c ( a b ) c {a^b}^c \ne (a^b)^c . 2 3 4 = 2 ( 3 4 ) = 2 81 2^{3^4} = 2^{(3^4)} = 2^{81} is correct; while 2 3 4 = ( 2 3 ) 4 = 2 ( 3 4 ) = 2 12 2^{3^4} = (2^3)^4 = 2^{(3\cdot 4)} = 2^{12} is wrong.

looking at this from top 0^2^3=0^2^3 nd then 2^3^2=2^3^2 nd then 2^3=2^3^1 so all these value give end number as 8 on both the sides

Raja Ghazanfar - 6 years ago

I don’t think your final statement is true. Can I have some proof?:)

Zoe Codrington - 2 years, 6 months ago
Oon Han
Jul 7, 2019

Top to bottom!!! 2 3 ( 2 3 2 ) 0 2 3 = 2 3 ( 2 3 2 ) 0 = 2 3 1 = 2 3 = 8 \begin{aligned} { 2 }^{ { 3 }^{ { { \left({ 2 }^{ { 3 }^{ 2 } }\right) }^{ { 0 }^{ { 2 }^{ 3 } } } } } } &= { 2 }^{ { 3 }^{ { { \left({ 2 }^{ { 3 }^{ 2 } }\right) }^{ { 0 } } } } } \\ &= { 2 }^{ { 3 }^{ 1 } } \\ &= { 2 }^{ { 3 } } \\ &= 8 \end{aligned} 2 3 1 2 3 2 0 2 3 = 2 3 1 = 2 3 = 8 \begin{aligned} { 2 }^{ { 3 }^{ { 1 }^{ { 2 }^{ { 3 }^{ { 2 }^{ { 0 }^{ { 2 }^{ 3 } } } } } } } } &= { 2 }^{ { 3 }^{ 1 } } \\ &= { 2 }^{ { 3 } } \\ &= 8 \end{aligned}

Thus, 2 3 ( 2 3 2 ) 0 2 3 = 2 3 1 2 3 2 0 2 3 \displaystyle { 2 }^{ { 3 }^{ { { \left({ 2 }^{ { 3 }^{ 2 } }\right) }^{ { 0 }^{ { 2 }^{ 3 } } } } } } = { 2 }^{ { 3 }^{ { 1 }^{ { 2 }^{ { 3 }^{ { 2 }^{ { 0 }^{ { 2 }^{ 3 } } } } } } } } .

Therefore, the answer is True .

Betty BellaItalia
Apr 15, 2017

anything power zero is equal to 1. so 2^3=8

Yashanshu Melkani
Sep 24, 2015

if we go on playing with powers.. its tough but you see that when we will proceed in this question at some point we will get LHS=2^3^(2^3^2)^0^2^3 we get 2^3^(2^3^2)^0=1(x^0=1) now we can say LHS=1^2^3..........(1) RHS=2^3^1^2^3^2^0^2^3 we get 2^3^1^2^3^2^0=1(x^0=1) now we can say RHS=1^2^3......(2) 1=2 =>LHS =RHS(hence proved

Chris White
Sep 23, 2015

Both get simplified to 2^(3^1) which is just 2^3 making both equal... very easy to do just by looking at it with the big 0 and 1 in there which auto simplifies it.

Ahmed Obaiedallah
Jun 22, 2015

It should have stopped at 2 3 1 \space \Large 2^{3^{1}}

Once a 0 or 1 appears then there's no point of continuing

Yash Shah
May 16, 2015

It says 2^something times 0.. So whole term becomes 2^0=1.. Same on other side..

Moderator note:

Wrong. a b c ( a b ) c {a^b}^c \ne (a^b)^c . 2 3 4 = 2 ( 3 4 ) = 2 81 2^{3^4} = 2^{(3^4)} = 2^{81} is correct; while 2 3 4 = ( 2 3 ) 4 = 2 ( 3 4 ) = 2 12 2^{3^4} = (2^3)^4 = 2^{(3\cdot 4)} = 2^{12} is wrong.

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