UPSC NDA I 2010 Mathematics Paper

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Question : 97 of 120

Marks: +1, -0

Let a,b,c be in AP.
Consider the following statements:
I. ‌

1

ab

,‌

1

ca

,‌

1

bc

are in AP.
II. ‌

1

√b+√c

,‌

1

√c+√a

,‌

1

√a+√b

are in AP.
Which of the statements given above is\/are correct?

I only
II only
Both I and II
Neither I nor II

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