For AB to be even, at least one between A and B must be even. AB would be odd only if both A and B are odd.swerve wrote:If A and B are positive integers, is the product AB even?
1) The sum A + B is odd.
2) A is even.
The OA is D
Source: Official Guide
Let's take each statement one by one.
1) The sum A + B is odd.
Since A + B is odd, one between A and B is even and the other is odd. Thus, AB is even, Sufficient.
2) A is even.
Since A is even, we have at least one between A and B is even. Sufficient.
The correct answer: D
Hope this helps!
-Jay
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