The HCF and LCM of 12, 15 and 21 are ______ and __________ respectively

LCM of 12, 15 and 21 is………

Find the HCF and LCM of 12, 15, 18, 27

Find the LCM: 12,15

The product of HCF and LCM of 18 and 15 is

The HCF and LCM of two natural numbers are 12 and 72 ,respectively.What is the difference between the two numbers, if one of the number is 24?

The HCF and LCM of two numbers are 12 and 924 respectively. Then the number of such pairs is