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The LCM of two numbers is 540, and their HCF is 18. If one of the numbers is 90, find the other number.

Let N be the greatest number that will divide 72, 105, 138 leaving the same remainder in each case. Then sum of the digits in N is:

The HCF of two numbers is 8. Which of the following can never be their LCM?

The LCM of two numbers is 40 times its HCF. If the product of the numbers is 1440, find their HCF.

If total number of factors of 2,520 is 'y', then find the value of (y - 4)(y + 6).

The HCF of 4625 and 5445 is 225, their LCM is:

Find the greatest number that will divide 420, 525 and 300 without leaving a remainder.

The ratio of two number is 6 : 5 and their HCF is 15. So find and their LCM?

The HCF and LCM of two natural numbers are 14 and 66, respectively. What is the difference between the two numbers, if one of the numbers is 28?

The product of two positive integers is 1620. If their HCF is 9 and their sum is 81, then find the difference between the numbers.