The average of the four-digit numbers that can be formed using each of the digits `3,5,7` and `9` exactly once in each number,is

The number of 4 digit numbers that can be formed with the digits 2,3,4,7 and using each digit only once is

The number of different four digit numbers that can be formed with the digits 2,3,4,7 and using each digit only once is :

How many four digit numbers can be formed with the digits 3,5,7 and 9 only ?

Find the number of four-digit numbers that can be formed using the digits 1,2,5,7,4 and 6, if every digit can occur at most once in any number.

The number of different four digit numbers that can be formed with the digits 2, 3, 4, 7 and using each digit only once is

The number of different four - digit numbers that can be formed with the digits 2, 3, 4, 7 and using each digit only once is

The number of different four - digit numbers that can be formed with the digits 2, 3, 4, 7 and using each digit only once is

The number of different four - digit numbers that can be formed with the digits 2,3,4,5,7 , using each digit only once, is :