The least number which when divided by 4, 6, 8 and 9 leave zero remainders in each case and when divided by 13 leaves a remainder of 7 is: 

Find the HCF of 3341 and 3328.

If the students of a class can be grouped exactly into 6 or 8 or 10, then the minimum number of students in the class must be. 

A number which when divided by 10 leaves remainder of 9, when divided by 9 leaves a remainder of 8, and when divided by 8 leaves a remainder of 7, is: 

What will be the greatest common factor of 96, 528, 2160, 3520?

The ratio of two numbers is 2: 3 and their L.C.M is 48.  What is the number?

If (x + k ) is the common factor of x² + ax + b and x² + cx + d , then what is k equal to ?

Three men step off together from the same spot. Their steps measure 63 cm, 70 cm and 77 cm respectively. The minimum distance each should cover so that all can cover the distance in complete steps is