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# Find the flaw (pathetic old proof) watch

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1. As we all know

2 = 2

2*2 = 4

2*2 – 2*2 = 4 - 2*2

(2+2)(2-2) = 2(2 – 2)

(2+2) = 2(2 – 2) / (2 – 2)

4 = 2 how the F*** is this possible
2. You can't take (2-2) out as a factor and divide, because it equals zero, and division by zero doesn't work.

Done.
3. (Original post by calumc)
You can't take (2-2) out as a factor and divide, because it equals zero, and division by zero doesn't work.
can u make ur font white so others can try...thanx
4. (Original post by IntegralNeo)
can u make ur font white so others can try...thanx
i think by posting that, others can just highlight his text and find the answer
5. You can't take (2-2) out as a factor and divide, because it equals zero, and division by zero doesn't work.
6. (Original post by Lord Huntroyde)
You can't take (2-2) out as a factor and divide, because it equals zero, and division by zero doesn't work.
copy/paste?
7. (Original post by Lord Huntroyde)
You can't take (2-2) out as a factor and divide, because it equals zero, and division by zero doesn't work.
Couldn't have said it better myself
8. i think he means turn it white so that people can highlight it if they want to see the answer, but if they want to work it out for themselves before seeing an answer they can read the thread without the answer staring them in the face.

that ones essentially the same as the 2=1 problem, just setting a and b to 2. the one using letters is better because people dont automatically thing 2*2-2*2 = 0 as in this one. all they see is a-b and by this time have usually forgotten that a=b. just requires a bit more thought.
9. Ha ha, that is funny, taking 0 out of an expression as a factor

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