Question

2+2=5 ( prove that )

Answer 1

I have seen this proof before and spotted the mistake. Can you spot the mistake in the solution?????

Answer 2

Consider log(2) in its expansion from log(1+x)

Hence log2= 1 -(1/2) +(1/3) -(1/4) +....

   now add and subtract all fractions with even denominators

               ={1+(1/2)+(1/3)+(1/4)+....} -2{(1/2)+(1/4)+(1/6)+....}

               = {1+(1/2)+(1/3)+(1/4)+....}-{1+(1/2)+(1/3)+(1/4)+....}

               =0

Therefore log2=0 and hence 2=1.

Similarly, 2=3 

2 + 2 = 2 + 3 = 5