The least multiple of 7, which leaves the remainder 4, when divided by any of 6, 9, 15 and 18, is 

The product of two number is 4107. If the HCF of the number is 37. The greatest number is

If the least common multiple(LCM) of two numbers is 231, the Highest common multiple(H.C.F)  of both numbers is 11 and the first number is 77, then the second number is

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

Find the total number of Prime Factors of 720 ? 

Find the L.C.M of $$ {6x}{y^{2}z},{8x^{2}{y^{3}z^{2},{12{x^{3}{y^{3}z^{3}}}}}}$$.

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 

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.