The smallest fraction that each of $$\frac{5}{14},\frac{6}{7}$$​ and $$\frac{10}{21}$$​ will divide exactly is:

Find the smallest number which, when divided by 12,18 and 24 , leaves a remainder of 5 in each case.

What is the largest 4 digit number that is divisible by 3,7,11,13 ?

The number of pairs of positive integers whose sum is 99 and HCF is 9 is

Find the HCF of 2.8, 11.2 and 0.84 .

Find the smallest number which when increased by 20 is completely divisible by 12, 20, 15, 18 and 24.

The LCM of the numbers 3.7 and 0.068 is:

Find the Highest Common Factor (HCF) of 372, 732 and 2196.

If the HCF of the expressions (x + 3) (2x² – 3x + a) and (x – 2) (3x² + 10x – b) is x² + x – 6, then what is the value of (2a – 3b) ?

The sum of two numbers is 1580 and their LCM is 18816. Find the two numbers.