Solution

For this question, you must select a pair of answer choices. The product of the pair must be negative, so the possible products are (-20)/2^4, (-20)/3^2,(-10)/2^4 & (-20)/3^2.
The first product is (-20)/2^4 = -\frac{20}{16} < -1, the second product is (-20)/3^2 = -\frac{20}{9} < -1, and the third product is, (-10)/2^4 = -\frac{10}{16} < -1, so you can stop there.
The correct answer consists of Choices B (–10) and C \frac{1}{2^4}.
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