If `N` is the number of three digit numbers of the form `a b c` such that `a < b < c` then

The number of three digit numbers of the form xyz where x>y>z is

The General form of a three digit number 256

The number of all 4-digit number of the form 5n+2 (n in n) having exactly one digit 7

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

Generalised form of a three-digit number xyz is

The number of n digit number formed by using digits {1,2,3} such that if 1 appears, it appears even number of times, is

The number of n digit number formed by using digits {1,2,3} such that if 1 appears, it appears even number of times, is

The number of n digit number formed by using digits {1,2,3} such that if 1 appears, it appears even number of times, is