The Highest Common Factor (HCF) of 42, 49, and 84 is 7. To find the HCF, you need to factorize each number into its prime factors. The prime factors of 42 are 2 x 3 x 7, the prime factors of 49 are 7 x 7, and the prime factors of 84 are 2 x 2 x 3 x 7. The HCF is the product of the common prime factors raised to the lowest power they appear in any of the numbers, which in this case is 7.
7
It is 7
hcf = 42, lcm = 84.
The GCF is 2.
The GCF is 7.
The GCF is 42.
If you mean: 21, 49 and 84 then the HCF is 7
If you mean 28, 49 and 84 then the hcf is 7
It is: 7
It is: 7
It is: 21
The GCF is 7.7 is the GCF of 42, 49 and 84.