The number of 4 digit numbers that can be made using exactly two digits out of 1,2,3,4,5,6 and 7

The number of four-digit numbers that can be formed by using the digits 1,2,3,4,5,6,7,8 and 9 such that the least digit used is 4 , when repetition of digits is allowed is

The number of four-digit numbers that can be formed by using the digits 1,2,3,4,5,6,7,8 and 9 such that the least digit used is 4 , when repetition of digits is allowed is

The number of four-digit numbers that can be formed by using the digits 1,2,3,4,5,6,7,8 and 9 such that the least digit used is 4 , when repetition of digits is allowed is

The number of four-digit numbers that can be formed by using the digits 1,2,3,4,5,6,7,8 and 9 such that the least digit used is 4 , when repetition of digits is allowed is

Find the number of 4 digit numbers that can be formed using the digits 1,2,3,4,5.If no digits is repeated.

The number of four digit numbers that can be formed using the digits 1,2,3,4,5,6,7,8,9 which are divisible by 3, when repetition of digits is allowed any number of times, is

The number of 4 digited numbers that can be formed using the digits {0,1,2,3,4,5} that are divisible by 6when repetition is allowed

The number of 4 digited numbers that can be formed using the digits {0,1,2,3,4,5} that are divisible by 6when repetition is allowed is

Find the number of 4 - digit telephone numbers that can be formed using the digits 1,2,3,4,5,6 with atleast one digit repeated.