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If P(a,b+c)Q(b,c+a)R(c,a+b) and PQ = QR ...

If `P(a,b+c)Q(b,c+a)R(c,a+b) `and PQ = QR and a=c then , a,b,c are in

A

in AP/AP

B

in GP/GP

C

in HP/HP

D

None of these

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