Three sets of English, Mathematics and Science books containing  336, 240, 96 books respectively have to be stacked in such a way that all the books are stored subject wise and the height of each stack is the same. Total number of stacks will be: 

A, B and C start running around a circular field having circumference 144 metre at the same time from the same point. Speeds of A, B and C are 6 m/minute, 8 m/minute and 12 m/minute. Find after how much time, they will meet again at the same point for the first time.

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

The least number which when divided by 4, 6, 8, 12 and 16 leaves a remainder of 2 in each case is: 

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

The smallest number, which when increased by 5 is divisible by each of 24, 32, 36 and 54, is 

The L.C.M. of two numbers is 4 times their H.C.F. The sum of L.C.M. and H.C.F is 125. If one of the numbers is 100, then the other number is-

Two numbers are in the ratio 3: 4. If their LCM is 240, the E smaller of the two numbers is: