Ten Problems Puzzles and Brain Teasers » Problem Five: 1=2

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Problem Five: 1=2

Oct 24th, 2006 by Percy

x = 2
$x\left(x-1\right) = 2\left(x-1\right)$
x^2-x=2x-2
x^2-2x=x-2
x(x-2)=x-2
x=1

How does x=2=1 ??

Update: Solutions are posted!

Posted in Classic, Mathematical, Paradox | 2 Comments

2 Responses to “Problem Five: 1=2”

on 25 Oct 2006 at 9:12 am James

Are you kidding me?
on 25 Oct 2006 at 9:59 am Percy

No, I’m most definitely not kidding you.

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