Find the lcm and hcf of the following integer by applying the prime factorisation method (1)12,15,21

Find the lcm and hcf of the following integer by applying the prime fa

1.	Find the lcm and hcf of the following integer by applying the prime factorisation method (1)12,15,21
Answer» LCM(12, 15, 21) = 420 LCM (12, 15, 21) = 420. HCF (12, 15, 21) = 3.