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

(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
GMATTM is a registered trademark of the Graduate Management Admission CouncilTM. The Graduate Management Admission CouncilTM does not endorse, nor is it affiliated in any way with the owner or any content of this web site.