The least number to be subtracted from 36798 to get a number which is exactly divisible by 78 is 

Find out the H.C.F of 306, 204 and 136.

A farmer has 945 cows and 2475 sheep. He farms them into flocks, keeping cows and sheep separate and having the same number of animals in each flock. If these flocks are as large as possible, then the maximum number of animals in each flock and total number of flocks required for the purpose are respectively 

The smallest perfect square divisible by each of 6, 12 and 18 is : 

Four runners started running simultaneously from a point on a circular track. They took 200 seconds, 300 seconds, 360 seconds and 450 seconds to complete one round. After how much time do they meet at the starting point for the first time? 

The greatest number that can be subtracted from 10000 so that the remainder may be divisible by 32, 36, 48 and 54 is-

The largest number, which divides 25, 73 and 97 to leave the same remainder in each case, is 

The greatest number that divides 411, 684, 821 and leaves 3, 4 and 5 as remainders, respectively, is