The trick to divide by 9-Try for the number `78`

The trick to divide by 99-Try for the number 456

Forming three-digit numbers with given three-digits-Try for the number 397

Find the smallest square number that is divisible by each of the numbers 4,9 and 10.

The greatest integer which divides the number 101^(100)-1 is:

The geometric mean of the numbers 3, 9, 27, 81, 243 is :

Reversing the digits-Two digit number 78

Product of 2.78 and 0.9996 is divided by 1.527 . The result with regard to significant figures is

A number is selected at random from the first 25 natural numbers. If it is a composite number, then it is divided by 6. But if it is not a composite number, it is divided by 2. Find the probability that there will be no remainder in the division.

A number N when divided by 14 remainder 5. The remainder when number is divided by 7 is :