If P,Q, R, are physical quantities, havi...

If P,Q, R, are physical quantities, having different dimensions, which of the following combinations can never be a meaningful quantity?

A

`(PQ-Q^(2))/(R)`

B

`(PQ-R)`

C

`(PQ)/(R)`

D

`((PR-Q^(2))/(R))`

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The correct Answer is:

A

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