>Today I got a series of creative math solution by email. One of them was a copy of real exam paper.
>
>

>Question: Expand (a+b)^n
>Answer:
>(a+b)^n = (a + b)^n = (a  +  b)^n = (a   +   b)^n etc.
>

Teacher's note was "Very funny Peter".
>Cetin

This one circulated among the staff at my college:

sin x    in
----- = -----
cos x    co