QUOTE(Integration @ Jun 9 2014, 05:34 PM)

Allzo: wott iz 1 + 2 + 3 + 4 + ... + 35 + 36? Reeplie quiklee, i haf too no!

well the classic way to solve this is that 36 + 1 = 37, 35 + 2 = 37 etc.

there are 36/2 pairs = 18 pairs that add up to 37

so 18 * 37 = 666.