Educational > Interesting Maths

2=1!!!

(1/1)

shirin.ns:
Let   a   =   b
Multiply both sides by a:   a2   =   ab
Add a2 - 2ab:   a2 + a2 - 2ab   =   ab + a2 - 2ab
Simplify:   2(a2 - ab)   =   a2 - ab
Divide by a2 - ab:   2   =   1

Oops!

What went wrong? It's the line which tells you to divide by a2 - ab. Since a = b, you have divided by zero, and this leads to the final incorrect statement.

Mosammat Arifa Akter:
its very interesting

smriti.te:
Good post...

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