Find the highest common factor (HCF) of 84, 126, and 210.
Note
Prime factors common to all three are 2, 3, and 7, so HCF = 2 × 3 × 7 = 42.
Find the highest common factor (HCF) of 84, 126, and 210.
Prime factors common to all three are 2, 3, and 7, so HCF = 2 × 3 × 7 = 42.