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

Problem Solving Question #83: Sum of Expression for Even Integers  
Time 0 0 : 0 0 : 0 0

For every even integer 2n from n= 1 to 8, inclusive, the nth term of a certain sequence is given by
`(-1)^(n)(1/2^n)` . If S is the sum of such a sequence then S is

Between -1 and -1/2
Between -1/2 and 0
Between 0 and 1/4
Between 1/4 and 3/4
Between 3/4 and 5/2
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