Select the option that is related to the third

The LCM of two natural numbers is 25 times their HCF. If the product of given two numbers is 3600, then find the LCM of the numbers. 

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

The HCF of two numbers is 21. Which of the following can never be their LCM?

The HCF of two numbers is 112, and their LCM is 3360. What is the sum of the numbers?

If the sum of 2 numbers is 185, their LCM is 1700 and HCF is 5. Then the difference between 2 numbers is:

The ratio of three numbers is 7:3:2. If their HCF is 4, find the LCM of the numbers.

Three numbers a, b and c are co-prime to each other such that ab = 70 and bc = 45. Find the value of (a + b + c).

Find the HCF of two numbers if LCM and product of those two numbers are 34 and 680 respectively.

The LCM for two prime numbers x and y, (x > y) is 319. The value of (2y + x) :

The HCF of two numbers is 6 and their LCM is 72. If one number is 18, find the other number.