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by jayanti » Mon Aug 08, 2011 10:03 am
The infinite sequence a1, a2,..., an,... is such that a1 = 2, a2 = -3, a3 = 5, a4 = -1, and an = an-4 for n > 4. What is the sum of the first 97 terms of the sequence?

A. 72
B. 74
C. 75
D. 78
E. 80
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by Anurag@Gurome » Mon Aug 08, 2011 10:50 am
jayanti wrote:The infinite sequence a1, a2,..., an,... is such that a1 = 2, a2 = -3, a3 = 5, a4 = -1, and an = an-4 for n > 4. What is the sum of the first 97 terms of the sequence?

A. 72
B. 74
C. 75
D. 78
E. 80
Refer to the post here : https://www.beatthegmat.com/sequence-t85445.html#378425
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