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If a,b,c be the pth , qth and rth terms ...

If a,b,c be the pth , qth and rth terms of an A.P., then `p(b-c) + q(c-a) + r(a-b)` equals to :

A

0

B

1

C

3

D

abc/pqr

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The correct Answer is:
A
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