What is the recommended intercropping method for Bengal

Let N be the greatest number that will divide 92, 114, 136 leaving the same remainder in each case. Then sum of the digits in N is:

The LCM of two natural numbers is 10 times their HCF. If the product of given two numbers is 1000, then find the LCM of the numbers. 

Three numbers are in the ratio 6:9:10 respectively. If the HCF of the numbers is 3, then find the LCM of the numbers.

The sum of HCF and LCM of two numbers is 450. If the LCM is 14 times the HCF, and one number is 42, what is the second number?

The least number which when divided by 16, 32 and 48 leave remainder 4, 20 and 36 respectively is? 

Ratio of two numbers 8:15 and their LCM is 2400. Find the sum of the given two numbers.

Ratio of two numbers 3:7 and their LCM is 840. Find the sum of the given two numbers.

The HCF of two numbers is 17. If their product is 867, then how many such pairs exist?

The HCF of two numbers is 6 and their LCM is 84. If one of these numbers is 42, then the second number is:

Three numbers a, b and c are co-prime to each other such that ab = 78 and bc = 65. Find the value of (a + b + c).