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GATE | GATE-CS-2015 (Set 2) | Question 6

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  • Last Updated : 30 Oct, 2017
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If the list of letters, P, R, S, T, U is an arithmetic sequence, which of the following are also in arithmetic sequence?
1. 2P, 2R, 2S, 2T, 2U
2. P–3, R–3, S–3, T–3, U–3
3. P2, R2, S2, T2, U2

(A) 1 only
(B) 1 and 2
(C) 2 and 3
(D) 1 and 3


Answer: (B)

Explanation: 1 is AP with common difference as double of that of original series.

2 is AP with common difference as same as original series.


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