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

Two numbers are in the ratio 3 : 4. Their LCM is 84 . The greater number is: 

The LCM of two numbers is 12 times their HCF. The sum of the HCF and the LCM is 403. If one of the number is 93, then the other number is. 

The sum of the HCF and LCM of two numbers is 680 and the LCM is 84 times the HCF. If one of the numbers is 56, the other is : 

Two numbers are in the ratio 3 : 5 and their HCF is 20. Their LCM is

What is the HCF of 16, 72 and 28 ?

What is the LCM (least common multiple) of 57 and   93?

What is the L.C.M of 12, 23, 24?