

Let we want to find HCF of two or more numbers. Then first we find factor of each number. Now HCF is found by multiplying all the factors which are present in all the numbers.
To find LCM of two or more numbers, again we find factor of those numbers and multiply all the factors which are present in either the number.
Example: Let we want to find LCM and HCF of 10 and 12
10 = 2*5
12 = 2*2*3
LCM = 2*2*3*5 = 60
HCF = 2
