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

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

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New post 26 Dec 2018, 10:50
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A
B
C
D
E

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  25% (medium)

Question Stats:

80% (00:40) correct 20% (00:46) wrong based on 20 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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Concentration: Entrepreneurship, Operations
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Re: If the sequence S has 150 terms, what is the 121st term of S?  [#permalink]

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New post 26 Dec 2018, 11:27
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? &nbs [#permalink] 26 Dec 2018, 11:27
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If the sequence S has 150 terms, what is the 121st term of S?

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