Question

Find the HCF of the following:

36, 42 and 45​​

Answer 1

Answer:

Step-by-step explanation:

here in the image attached below,we can see that we can divide the three numbers with a common factor 3

but further we cannot find a common factor for 12,14,15 with which we can divide all of them completely

so the only and the highest common factor is 3.

hope this helps you

thank you

Answer 2

Step-by-step explanation:

Factors of 30 = 2 x 3 x 5

Factors of 42 = 2 x 3 x 7

H.C.F. (30, 42) = 2 x 3 = 6

Find the prime factorization of 42

42 = 2 × 3 × 7

Find the prime factorization of 45

45 = 3 × 3 × 5

To find the GCF, multiply all the prime factors common to both numbers:

Therefore, GCF = 3