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If the 2nd, 5th and 9th terms of a non-constant AP are in GP, then the common ratio of this GP is

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If the 2nd, 5th and 9th terms of a non-constant AP are in GP, then the common ratio of this GP is

(a) 8/5

(b) 4/3

(c) 1

(d) 7/4

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1 Answer

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Best answer

Correct option (b) 4/3

Explanation:

Let a be the first term and d be the common difference. Then, we have a + d, a + 4d, a + 8d in GP,

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