+2 votes
in JEE by kratos

Let a1, a2, a3, ......., a10 be in G.P. with ai > 0 for i = 1, 2, ......., 10 and * be the set of pairs (r, k), r, k ∈ N (the set of natural numbers) for which

Then the number of elements is *, is

(1) 2

(2) 10

(3) Infinitely many

(4) 4

1 Answer

+4 votes
by kratos
 
Best answer

The correct option is (3).

Explanation:

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