निम्नलिखित

Let N be the greatest number that will divide 78, 109, 140 leaving the same remainder in each case. Then sum of the digits in N is:

Find the difference between sum of digits of LCM and HCF of 36, 84 and 132.

The smallest number which when divided by 29 and 33 leaves remainder 11 and 15 respectively is:

The least multiple of 19, which on dividing by 5,6,7,8 and 9 leaves remainder 2 in each case is

Two numbers are in the ratio 4:7. The product of their H.C.F. and L.C.M. is 5488. The sum of the numbers is:

The HCF of two numbers is 8. Which of the following can never be their LCM?

What is the minimum number of square marbles required to tile a floor of length 2 metres 8cm and width 2 metres 86 cm?  

If the total ages of A and B is 18 years more than the total age of B and C. C is how many years younger than A?

What is the HCF of 4/5, 6/8, 8/25 ?