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If two positive integers a and b are exp...

If two positive integers a and b are expressible in the form `a =pq^2` and `b=p^3q` , p and q being prime numbers, then HCF `(a,b)` is
`a)pq`
`b)p^3q^3`
`c)p^3q^2`
`d)p^2q^2`

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