The number of 9digit numbers formed from `{5,6,7,8,9}` so that each digit that appears in the number,repeats atleast three times is

The number of four digited even numbers that can be formed from {4,5,6,7,8,9} is

Let N be the number of 6-digit numbers such that the digits of each number are all form the set {1, 2, 3, 4, 5} and any digit that appears in the number appears atleast twice. Then the last digit of N is:

Largest 4 digit number formed by 6,7,5 and 9 is

Find the number of 4 digit odd numbers that can be formed using the digit 4,6,7,9,3 so that each digit occurs at most once in each number.