Find the numbers of all 3-digit odd natural numbers with no digit being repeated.

How many 4-digit numbers are there with no digit repeated?

Find the number of n digit numbers, which contain the digits 2 and 7, but not the digits 0, 1, 8, 9.

The number of 3-digit odd numbers, by using the digits 1,2,3,4,5,6 when the repetition of digits is allowed is :

Find the total number of 9-digit numbers which have all different digits.

Find the sum of all the four digit numbers which are divisible by 29.

The total number of 4-digit numbers is

Find the sum of all odd numbers of four digits which are divisible by 9.

How many 4 digits numbers can be formed from the digits 1 to 9 if not digit can be repeated.

The last four digits of the natural number 3^100 are