A three digit number n is such that the last two digits of it are equal and different from the first. The number of such n's is

The number of three digit numbers such that its first two digits are each divisible by its third digit 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

Find the last digit, last two digits and last three digits of the number (81)^(25)

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 :