GMAT Practice Question Set #28 (Question 82-84)

Problem Solving Question #82: Sum of Expression for 5 Integers  
Time 0 0 : 0 0 : 0 0

For every integer n from 1 to 5, inclusive, the nth term of a certain sequence is given by
`(-1)^(n+1)(1/2^n)` . If S is the sum of such a sequence then S is

(A)

Between -1 and -1/2

(B)

Between -1/2 and 0

(C)

Between 0 and 1/4

(D)

Between 1/4 and 3/4

(E)

Between 3/4 and 5/2

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