hcf and lcm of 56 and 108 ? any help out there on how to do it?

Answer 1

HCF:
56 = 2³*7
108 = 2² * 3³
The HCF is 4.
LCM:
LCM of 56 and 108 is 56*108/4 = 56*27 = 1512.
In general, the LCM of a and b is a*b/HCF(a,b).

Answer 2

56 = 7 x 8 = 7 x 4 x 2

108 = 12 x 9 = 3 x 3 x 3 x 4

Now you can work out the HCF and LCM.

Answer 3

What is the largest number that divides both 56 and 108. HCF is that number. 4.

LCM : multiples of 56 are:
2,4,8,14,28
multiples of 108 are
2,4
LCM is 2 x 2 = 4