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interger is even?

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Source: — Data Sufficiency |
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by bluementor » Tue Mar 31, 2009 4:06 am
Statement 1:
If d is odd, c can be even or odd. Insufficient.

Statement 2:
If d is even, c can be even or odd. Insufficient.

Both statements together:
c = even, d=odd -->both statements are satisfied
c =even, d=even -->both statements are statisfied
c =odd, d=odd --> statement 2 is not satisfied
c=odd, d=even -->statement 1 is not satisfied

Hence, we can conclude that c must be even. Choose C.

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