Question

Find the HCF of 30,60,90 and 105

Answer 1

15 IS THE HCF OF 30,60,90 AND 105

Answer 2

Using prime factorization
30=5*3*2
60=5*3*2*2
90=5*3*2*3
105=5*3*7
Hence, hcf of 30,60,90,105 is 5*3 that is 15