BrainBashers Puzzles

Here is a proof that 2 = 0:

assume x=2

X = 2

multiply by x on both sides X*X = 2X

subtract 4 from both sides X*X - 4 = 2X - 4

factorise (X+2)(X-2) = 2(X-2)

divide by (x-2) on both sides X+2 = 2

subtract 2 from both sidesX = 0

We started with X = 2 but we have showed that X = 0 at the same time! Where does the logic fail?

[Ref: ZBHF]

Printed from BrainBashers [www.brainbashers.com]