Question

highest common factor of 30 and 45​

Answer 1

factors of 30 = 1, 2, 3, 5, 6, 10, 15, 30;

factors of 45 = 1, 3, 5, 9, 15, 45

choose the greatest factor that exactly divides both 30 and 45,

i.e., 15.

final answer is 15