Using the digits 1, 2, 3, 4, 5, 6,7, a number of 4 different digits is formed. Find

Using the digit 1, 2, 3, 4, 5, 6, and 7, a number of 4 different digit is formed find,

How many four-digit numbers can be formed by using the digits 1, 2, 3, 4, 5, 6, 7 if at least one digit is repeated.

How many four-digit numbers can be formed by using the digits 1, 2, 3, 4, 5, 6, 7 if at least one digit is repeated.

How many four-digit numbers can be formed by using the digits 1, 2, 3, 4, 5, 6, 7 if at least one digit is repeated.

How many four-digit numbers can be formed by using the digits 1, 2, 3, 4, 5, 6, 7 if at least one digit is repeated.

How many four-digit numbers can be formed by using the digits 1, 2, 3, 4, 5, 6, 7 if at least one digit is repeated.

The number of 4 digit numbers without repetition that can be formed using the digits 1, 2, 3, 4, 5, 6,7 in which each number has two odd digits and two even digits is

A five digit number is formed at random by using the digits 1, 2, 3, 4, 5, 6 and 7. How many five digit numbers formed will have distinct digits?

The number of 4 digit numbers without repetition that can be formed using the digit 1,2,3,4,5,6,7 in which each number has two odd digits and two digits is