Two numbers are in the ratio 21 : 10. If their HCF is 11, then the sum of the numbers is

Two numbers are in the ratio of 3 : 5. Their L.C.M. is 90. The numbers are

Let L be the LCM and Hbe the HCF of two given numbers. L and H are in the ratio 3 : 2. If the sum of the two numbers is 45, then what is the product of the numbers?

The product of two numbers is 2160 and their HCF is 12. If the sum of the squares of the two numbers is 4896, then what is the mean of the two numbers?

There are two numbers. HCF of both the numbers is 11, and their LCM is 693. If the first number is 77, find the second number?

Three number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is: