A positive number plus its reciprocal equals 2.5. Which of the following could be the number?
Correct answer: C. 2
Test the options: 2 + 1/2 = 2.5. The other choices give 2, about 2.17 and about 3.33. (The number 1/2 also works, since 1/2 + 2 = 2.5.)
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