Question

ab have two coprimes its hcf is

Answer 1

Co prime are 3,5

So by LCM of these two numbers

5=5×1

3=3×1

LCM=1

HCF=3×5×1

=15

Answer 2

Two Numbers are said to be co ~prime if they have no common factor except one ,i.e.,(HCF= 1 ). Since there is no common factor ,there fore the LCM of those two numbers is their product . For the co prime numbers a and b , LCM=axb = ab.