Question

Using prime factorization, find the HCF and LCM of  8, 9, 25 .

Answer 1

8 = 2 × 2 × 2 = 2³
9 = 3 × 3 = 3²
25 = 5 × 5 = 5²
HCF = product of smallest power of each common prime factor in the numbers = 1
LCM = product of greatest power of each prime factor involved in the numbers
= 2³ × 3² × 5² = 1800