Find the highest common factor (HCF) of 48 and 180.
Note
48 = 2^4×3 and 180 = 2^2×3^2×5, so common factors are 2^2×3 = 4×3 = 12, the HCF.
Find the highest common factor (HCF) of 48 and 180.
48 = 2^4×3 and 180 = 2^2×3^2×5, so common factors are 2^2×3 = 4×3 = 12, the HCF.