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

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

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

Let ' m ' denotes the number of four digit numbers such that the left most digit is odd, the second digit is even and all four digits are different and ' n ' denotes the number of four digit numbers such that left most digit is even, second digit is odd and all four digit are different. If m=nk, then k equals :

Let ' m ' denotes the number of four digit numbers such that the left most digit is odd, the second digit is even and all four digits are different and ' n ' denotes the number of four digit numbers such that left most digit is even, second digit is odd and all four digit are different. If m=nk, then k equals :

The total number of 6-digit numbers in which the sum of the digits is divisible by 5, is

The total number of 6-digit numbers in which the sum of the digits is divisible by 5, is

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

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