Data Sufficiency – GMAT Question of the Day

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Data Sufficiency – GMAT Question of the Day

QOD2015_0601
Explanation
Since 16 is divisible by 4, we only need to know if 10x is divisible by 4.

Statement (1) 10 raised to the power of any integer 2 or greater (and 2 is the smallest prime) is a multiple of 100 and thus divisible by 4. Statement (1) alone is sufficient.

The correct answer must be either A or D.

Statement (2) x could be an integer greater than 2, which would make 10x divisible by 4, but if x = 1, 101 is not divisible by 4. Statement (2) is therefore insufficient.
The correct answer is A.