is product of certain PAIR is even ?
Statement I
sum of the pair is odd
this means one number is odd and the other is even
Product of any even and odd is always even.
Sufficient.
Statement II
one number is odd and one is even
Therefore the product will always be even.
Sufficient.
Hence D is the answer.
gmat prep 2
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Source: Beat The GMAT — Data Sufficiency |
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parallel_chase
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