u2lover wrote:

another important point that I got recently is that ZERO is a Multiple of any number

http://www.gmatclub.com/phpbb/viewtopic ... highlight=
further to the above:

from one of the post (guess by giddi) on the forum:

0! = 1

0^0 is cannot be determined.

Zero is neither positive nor negative

Zero is even

k^0 = 1

Zero is divisible by every integer (except 0), Since remainder of 0/k = 0

Zero is a multiple of every integer. 0 = k*0