Discussion

If y is an even integer and x is an odd integer, which of the following expressions could be an even integer?

(A)

image

(B)...
(C)...
(D)...
(E)...
(F)...
*This question is included in Nova Math - Problem Set A: Substitution, question #3

The solution is

Posted: 04/18/2013 12:51
Hi, I am confused a little bit here? How about if we choose y=4 and x=3 would the answer stay the same?
Posted: 04/18/2013 14:28
Redouanne, the answer would stay the same. The question asks for which answer COULD be an even number. Even if your pair of x and y do not result in an even number, other pairs could, as x=1 and y=2 were shown to do.

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