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just recently, i noticed a problem with a similar gotcha.
A+ for the answer
(extra credit) A++ for spotting the flaw in the answer...
Q: If M and N are even ints, which of the following should also be an even int?
a. (M + 2)^|N|
b. (M*N)^|M - N|
c. N^|M| * N
d. M^N * M^2
e. (M + 1)*(N - 1)[/quote]
this is oops's post that i extracted from here for the sake of simplicity: http://www.gmatclub.com/phpbb/viewtopic ... 457#343457