Q2 of 57 Page 31

If two numbers are written in the form of m = pq3 and n = p3q2 then find the HCF of m, n when p, q are prime numbers:

m = pq3

n = p3q2


So for finding the HCF we may write as follows:


Common Factor Least Power


p 1


q 2


So HCF = q2 × p


= pq2


So correct answer is B.

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(ii) 43.123456789


(iii)


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