Which of the following is a rational number?
Correct answer: A. √49/64
- A. √49/64
- B. √1.6
- C. √0.9
- D. -√250
Explanation
A, C and D are incorrect as they are irrational. B is correct as √(49/64) = √49/√64 = ⅞ 7/8 is in the form of a/b √(49/64) is a rational number
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About Quantitative Reasoning
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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