Question

if a and b are co-prime then find LCM and HCF of (a,b)​

Answer 1

Answer:

If two numbers are co-prime, that means there is no common factor between them and so the lowest common multiple of them would simply be the product of them i.e a *b

Note: LCM is basically the product of the factors in both numbers with a condition that a common factor should be taken just that many times as the maximum time it occurs in any of the numbers.

Don't remember any rule. Just think of how you will get to the minimum number which is divisible by both the numbers and you will figure out the rest..