Two numbers are in the ratio 5:7. The product of their H.C.F. and L.C.M. is 5040. The sum of the numbers is:

Let N be the greatest number that will divide 90, 112, 134 leaving the same remainder in each case. Then sum of the digits in N is:

What is the HCF of 36 and 198?

The LCM of two numbers is 4 times of their HCF. The sum of LCM and HCF is 320. If one of the number is 256, then the other number is:

The LCM of two numbers is 540, and their HCF is 18. If one of the numbers is 90, find the other number.

If the highest common factor of two numbers is 18, then which of the following may be the least common multiple of the numbers?

What is the minimum number of square marbles required to tile a floor of length 4 metres 35cm and width 3 metres 60 cm?  

Find the HCF (GCD) of 48 and 72.

Find the LCM of 20, 30, 40, 50.