No. of different 6 digit numbers whose sum of digits to be odd is :

Number of different 6 digit numbers whose sum of digits to be odd is (repetitions are allowed)

The total number of 3-digit numbers, whose sum of digits is 10, is

The total number of 3-digit numbers, whose sum of digits is 10, is __________.

Number of 7 digit numbers the sum of whose digits is 61 is

Let N be the number of 4- digit numbers which contain not more than 2 different digits. The sum of the digits of N is :

Let N be the number of 4- digit numbers which contain not more than 2 different digits. The sum of the digits of N is :

How many different seven digit numbers are there the sum of whose digits is even ?

How many different seven digit numbers are there, the sum of whose digits is even ?