GRE Question of the Day (December 21st)

Math

In a certain sequence, each term beyond the second term is equal to the average of the previous two terms. If \({A1}\) and \({A3}\) are positive integers, which of the following is not a possible value of \({A5}\)?

A. \({\frac{{-9}}{{4}}}\)

B. zero

C. \({\frac{{9}}{{4}}}\)

D. \({\frac{{75}}{{8}}}\)

E. \({\frac{{41}}{{2}}}\)

Correct Answer - D - (click and drag your mouse to see the answer)

Question Discussion & Explanation