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 

What is the Highest Factor of ?

LCM of two numbers is 2079 and their HCF is 27. If one of the numbers is 189, the other number is

The LCM of two numbers is 864 and their HCF is 144. If one of the numbers is 288, the other number is:

The HCF of two numbers is 4 and the two other factors of LCM are 5 and 7. Find the smaller of the two numbers.

What is the greatest common factor of 2³ × 7² and 2⁵ × 3¹?

Find the LCM of x and (x+3).

The L.C.M and H.C.F of the two numbers are 84 and 21 respectively. If the numbers have a ratio of 1: 4, what is the larger number?