The number of numbers of 7 digits whose sum of digits is even, is

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 __________.

The number of 5digit number such that sum of digits is even

The total number of seven digit numbers so that the sum of digits is even is

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

The total number of seven digit numbers so that the sum of digits is even

The number of five digit numbers in which all digits are even, is :

A number consists of two digits. The sum of the digits is 10. On reversing the digits of the number, the number dicreases by 36 . What is the product of the sum digits?