Find the highest common factor (HCF) of 84, 126, and 210.
Note
Prime factorizations yield common factors 2 × 3 × 7 = 42, so the HCF of 84, 126, and 210 is 42.
Find the highest common factor (HCF) of 84, 126, and 210.
Prime factorizations yield common factors 2 × 3 × 7 = 42, so the HCF of 84, 126, and 210 is 42.