Determine the highest common factor (HCF) of 84 and 126.
Note
Factorizing: 84 = 2^2·3·7 and 126 = 2·3^2·7, so the common factors multiply to 2·3·7 = 42, which is the HCF.
Determine the highest common factor (HCF) of 84 and 126.
Factorizing: 84 = 2^2·3·7 and 126 = 2·3^2·7, so the common factors multiply to 2·3·7 = 42, which is the HCF.