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Let the positive numbers a, b, c, d be i...

Let the positive numbers a, b, c, d be in A.P. Then abc, abd, acd, bcd are:

A

not in A.P/ G.P/ H.P.

B

in A.P.

C

in GP.

D

in H.P.

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MODERN PUBLICATION-SEQUENCES AND SERIES-EXERCISE
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