Which sport made its debut at the Khelo India Youth

Find the largest four-digit number which when divided by each of 18, 21 and 24 leaves a remainder of 7.

Find out the sum of digits of largest number that leaves same remainder when it divides 12006, 6006, 5506 and 10006. 

The LCM of two natural numbers is 12 times their HCF. If the product of given two numbers is 10,800, then find the LCM of the numbers.

Ratio of two numbers 5:9 and their LCM is 1260. Find the sum of the given two numbers.

The product of two numbers is 2880 and their GCD is 24. What is the LCM?

If the highest common factor of two numbers is 25, then which of the following may be the least common multiple of the numbers?

The HCF of 108 and 144 is ______

 Find the HCF and LCM of 24 and 36.

The square of sum of two numbers is 25,600 and the sum of squares of the same two numbers is 13,000. If their H.C.F. is 10, then find their L.C.M.