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If the sequence S has 150 terms, what is the 121st term of S?

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Manager
Joined: 29 Nov 2018
Posts: 200
Concentration: Marketing, Strategy
If the sequence S has 150 terms, what is the 121st term of S?  [#permalink]

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26 Dec 2018, 11:50
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15% (low)

Question Stats:

79% (00:49) correct 21% (00:51) wrong based on 34 sessions

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If the sequence S has 150 terms, what is the 121st term of S?

1. The first term of S is 32.

2. The 138th term of S is 1248 and each term of S after the first is 18 more than the preceding term.
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Joined: 24 Aug 2016
Posts: 804
Concentration: Entrepreneurship, Operations
GMAT 1: 630 Q48 V28
GMAT 2: 540 Q49 V16
Re: If the sequence S has 150 terms, what is the 121st term of S?  [#permalink]

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26 Dec 2018, 12:27
1
1. The first term of S is 32 - Not sufficient - As we do not know about the type of sequence and the progression manner.

2. The 138th term of S is 1248 and each term of S after the first is 18 more than the preceding term. - Sufficient - As by applying AP formula we will get the 1st term and then by the same we can get the 121st term.

Thus ans is B
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Re: If the sequence S has 150 terms, what is the 121st term of S?   [#permalink] 26 Dec 2018, 12:27
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