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Question

If p,q be two A.M.'s and G be one G.M. between two numbers, then G2=

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Solution

(b) (2p - q)(2q - p)

Let the two numbers be a and b

a, p, q and b are in A.P>

pa=qp=bq

pq=qp and qp=bq

a=2pq and b=2qp ..... (i)

Also, a, G and b are in G.P.

G2=ab

G2=(2pq)(2qp)


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