LCM AND HCF

LCM-Least Common Multiple

The LCM that Multiplied by certain number given that  numbers

Eg: 20,30
the LCM is 60
20*3=60,30*2=60

HCF: Highest Common Factor

The common number's multiplication 1*5*2=10 ,
That also multiples of the given terms 10*3=30,10*2=20.

Eg:

HCF * LCM =X *Y

10*60=20*30

600=600