If the arithmetic means of 3a and 4b is greater than 50, and a is twice b, then the smallest possible integer value of a is: 

The number of integers in between 100 and 600, which are divisible by 4 and 6 both, is: 

The difference of a number consisting of two digits from the number formed by inter changing the digits is always divisible by: 

What least value which should be added to 1812 to make it divisible 7,11 and 14? 

Product of digits of a 2-digit number is 27. If we add  54 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

If an 8-digit number 1862383A is divisible by 22, find the value of A.

How many numbers can be completely divided to 240?

What least value must be assigned to ‘*’ so that the number 63576 * 2 is divisible by 8?