If 1 b+c , 1 c+a , 1 a+b are in HP, then which of the following is/are correct? 1. a, b, c are in AP 2. (b+c)^2, (c+a)^2, (a+b)^2 are in GP Select the correct answer using the code given below.

NDA 2021 Mathematics question

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are in HP, then which of the following is/are correct? 1. , , are in AP 2. , , are in GP Select the correct answer using the code given below.

Answer: (A)

The given terms are in HP, so their reciprocals are in AP: . Thus are in AP and statement 1 is correct. Statement 2

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Question ID VK-033621