How many numbers are there from 500 to 650 (including both) which are neither divisible by 3 nor by 7?

What is the greatest number which will divide 110 and 128 leaving a remainder 2 in each case?

A number divided by 13 leaves a remainder 1 and if the quotient, thus obtained, is divided by 5, we get a remainder of 3. What will be the remainder if the number is divided by 65?

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

Direction : What should come in place of the question (?) in the following question.

8934 – 3257 + 481 = ? + 2578

A student multiplies a number with 7.2 instead of 0.72. If due to this answer is 2592 more than the right answer, then what was the original number? 

The product of two positive numbers is 11520 and their quotient is $$9\over5$$.Find the difference of two numbers?

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.