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Forum Mind Puzzles - 4


Sikslik7

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Puzzle #2 still unsolved: http://www.343industries.org/forum/topic/27425-forum-mind-puzzles-2/ 

 

The following is a proof that 2 equals 1.

 

a = b

aa = ab

aa-bb = ab- bb

(a+b ) (a-b ) = b (a-b )

a+b = b

                                                                             b+b = b       (since a=b )

2b = b

2 = 1

 

 

Now what's wrong with this?

 

Solved by  Jl1223 X on 4/21/13

Edited by Sikslik7
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I'm starting. Wait up!

 

EDIT: I thinks I gots it. 

 

 

(a+b ) (a-b ) = b (a-b )

a+b = b

 

If a=b, then a - b = 0. As anything multiplied by 0 = 0, it should end up as 0 = 0 instead of a+b = b.

 

It can only end up as a + b = B if a - b =/= 0. Because a - b = 0, then this execution is invalid.

 

 

Am I correct or am I correct?

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