## GMAT Practice Question Set #29 (Question 85-87)

Problem Solving Question #87: Infinite Sequence
 Time 0 0 : 0 0 : 0 0
 In the infinite sequence a1, a2, a3, ..., an, ..., each term after the first is equal to twice the previous term. If a5 - a2, = 12, what is the value of a1? (A) 4 (B) frac {24}{ 7} (C) 2 (D) 12/7 (E) 6/7
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