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# 600 level sequence math question

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Intern
Joined: 24 Feb 2017
Posts: 7
600 level sequence math question  [#permalink]

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07 Aug 2017, 12:48
00:00

Difficulty:

(N/A)

Question Stats:

57% (00:44) correct 43% (01:48) wrong based on 7 sessions

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The first two terms of a sequence are -3 and 2. Subsequent odd-numbered terms are given by adding 1 to the previous term, and subsequent even-numbered terms are given by multiplying the previous term by -1. What is the sum of the first 147 terms?

a.-3
b.-2
c.-1
d. 1
e. 2

Looking for the easiest way to solve this question. Thank you in advance

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Math Expert
Joined: 02 Sep 2009
Posts: 55271
Re: 600 level sequence math question  [#permalink]

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12 Aug 2017, 03:03
cgalan6 wrote:
The first two terms of a sequence are -3 and 2. Subsequent odd-numbered terms are given by adding 1 to the previous term, and subsequent even-numbered terms are given by multiplying the previous term by -1. What is the sum of the first 147 terms?

a.-3
b.-2
c.-1
d. 1
e. 2

Looking for the easiest way to solve this question. Thank you in advance

--== Message from the GMAT Club Team ==--

THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.

_________________
Re: 600 level sequence math question   [#permalink] 12 Aug 2017, 03:03
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