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The fourth seventh and tenth terms of a ...

The fourth seventh and tenth terms of a G.P. are p,q,r respectively, then `:`

A

`p^(2)=q^(2)+r^(2)`

B

`q^(2)=p r`

C

`p^(2)=q r`

D

`p q r+p q+1=0`

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The correct Answer is:
B
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