If a,1b,c and 1p,q,1r form two arithmetic progressions of the same common difference, then a, q, c are in A.P. if

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p, b, r are in A.P.

1p,1b,1r areinA.P.

p, b, r are in G.P

none of these

answer is B.

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Detailed Solution

Since a, q and c are in A.P., so2q=a+c⇒1p+1r=2b⇒1p,1b,1r are in A.P.

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