. How many four digits number can be formed by using `1,2,....,7`

How many four digits numbers can be formed by using 1,2,...7 which are greater than 3400?

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 using digits 1, 2, 3, 4, 5 such that at least one of the number is respeated?

How many four digit numbers can be formed using digits 1, 2, 3, 4, 5 such that at least one of the number is respeated?

How many four digit numbers can be formed using digits 1,2,3,4,5 such that atleast one of the number is repeated?

How many four digited numbers can be formed using the digits 1,2,5,7,8,9 ? How many of them begin with 9 and end with 2 ?

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.