Let N be the number of 4 digit numbers formed with at most two distinct digits. Then the last digit 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 :

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 :

The number of 'n' digit numbers such that no two consecutive digits are same is

The number of 'n' digit numbers such that no two consecutive digits are same is

The number of all four digit numbers with distinct digits is

How many four digit numbers are there with distinct digits?

How many four digit numbers are there with distinct digits?

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 :