If p^2, q^2 and r^2 (where p, q, r>0) are in GP, then which of the following is/are correct? 1. p, q and r are in GP. 2. p, q and r are in AP. Select the correct answer using the code given below :

NDA 2020 Mathematics question

If , and (where ) are in GP, then which of the following is/are correct? 1. p, q and r are in GP. 2. , and are in AP. Select the correct answer using the code given below :

(A)1 only
(B)2 only
(C)Both 1 and 2Correct
(D)Neither 1 nor 2

Answer: (C)

Solution

(all positive), so are in GP (1 correct). Taking

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Question ID VK-029213