Question

Q3. Find the LCM and HCF of 72 and 9.​

Answer 1

The lcm of 72 and 9 can be found using the prime factorization of 72 and 9: The prime factorization of 72 is: 2 x 2 x 2 x 3 x 3. The prime factorization of 9 is: 3 x 3. Eliminate the duplicate factors of the two lists, then multiply them once with the remaining factors of the lists to get lcm(72,72) = 72.