Find the greatest common divisor (GCD) or highest common factor (HCF) of 48 and 180.
Note
Prime-factorization gives common factors 2^2 and 3^1, so GCD = 4 × 3 = 12.
Find the greatest common divisor (GCD) or highest common factor (HCF) of 48 and 180.
Prime-factorization gives common factors 2^2 and 3^1, so GCD = 4 × 3 = 12.