If p : q be the ratio of two whole numbers and r be their

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If p : q be the ratio of two whole numbers and r be their HCF, then the LCM of those two numbers is

1. qr
2. pr
  q
3. pq
  r
4. pqr

Correct Option: D

We can find the LCM with the help of given formula ,
Product of two numbers = HCF × LCM
⇒ Numbers = rp and rq
∴ rp × rq = r × LCM
⇒ LCM = pqr
Hence , the LCM of two numbers is pqr.