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There are two sets A and B each of which consists of three numbers in A.P.whose sum is 15 and where D and d are the common differences such that `D-d=1. If p/q=7/8`, where p and q are the product of the numbers ,respectively, and ` d gt 0` in the two sets .
The sum of the product of the numbers in set B taken two at a time is

A

52

B

54

C

64

D

74

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The correct Answer is:
D
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