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Question

If H is the harmonic mean between p and q, then the value of Hp+Hq is
[MNR 1990; UPSEAT 2000, 01]

A
2
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B
pqp+q
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C
p+qpq
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D
None of these
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Solution

The correct option is A 2
As given H=2pqp+q
Hp+Hq=2qp+q+2pp+q=2(p+q)p+q=2.

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