If n is an odd integer, which one of the following is an even integer?
Correct answer: D. n(n+3)
- A. n3
- B. n/4
- C. 2n+3
- D. n(n+3)
Explanation
A is incorrect as assuming our odd integer is 3, cube of 3 is equal to 9, which is not even. B is incorrect as assuming our odd integer is 3, 3/4 is equal to 0.75, which is not even or neither an integer. C is incorrect as assuming our odd integer to be 3, {2(3) + 3 = 9}, which is not even, D is correct as assuming our odd integer to be 3, {3(3)+3 = 12}, which is even and an integer.
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Quantitative reasoning applies arithmetic and basic algebra to numerical relationships, including percentages, ratios, averages, fractions, proportions, profit and loss, rates, time, work and measurement. Questions focus on translating words into equations, choosing an efficient method and checking whether the result is numerically reasonable.
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