Question

find the hcf of 720 and 396​

Answer 1

prime factorization of 720

720 =2×2×2×2×3×3×5

prime factorization of 396

396 = 2×2×3×3×11

to find the HCF multiply all the prime common to both numbers :

therefore HCF = 2×2×3×3

=36

Answer 2

Given,

Two numbers, 720 and 396.

To Find,

The HCF of the given two numbers, 720 and 396.

Solution,

The factorization for 720 can be done as follows:

720 = 2×2×2×2×3×3×5

The factorization for 396 can be done as follows:

396 = 2×2×3×3×11

The highest common factors of 720 and 396 = 2×2×3×3

⇒36

Henceforth, the H.C.F., which is the highest common factor for 720 and 396 is 36.