Question

write the common factors and find h.c.f. 1 18,12,30

Answer 1

18 = 2 * 3 * 3
12 = 2 * 2 * 3
30 = 2 * 3 * 5

HCF = 2 * 3 = 6

Answer 2

common factors of 18, 12 and 30 are= 1, 2, 3 and 6
highest common factor (h.c.f) = 6