The number of 4-digit numbers that can be made with the digits 1,2,3,4 and 5 in which atleast two digits are identical, is

The number of four-digit numbers that can be made with the digits 1,2,3,4, and 5 in which at least two digits are identical is a.4^(5)-5!b .505 c.600 d.none of these

The number of four-digit numbers that can be made with the digits 1, 2, 3, 4, and 5 in which at least two digits are identical is

The number of four-digit numbers that can be made with the digits 1, 2, 3, 4, and 5 in which at least two digits are identical is a. 4^5-5! b. 505 c. 600 d. none of these

The number of four-digit numbers that can be made with the digits 1, 2, 3, 4, and 5 in which at least two digits are identical is a. 4^5-5! b. 505 c. 600 d. none of these

The number of four-digit numbers that can be made with the digits 1, 2, 3, 4, and 5 in which at least two digits are identical is a. 4^5-5! b. 505 c. 600 d. none of these

The number of four-digit numbers that can be made with the digits 1, 2, 3, 4, and 5 in which at least two digits are identical is a. 4^5-5! b. 505 c. 600 d. none of these

The number of 5 digit numbers that can be made using the digits 1 and 2 and in which at least one digit is different, is

The number of 5-digit number that can be made using the digits 1 and 2 and in which at laest one digits is different, is

The number of 5-digit number that can be made using the digits 1 and 2 and in which at laest one digits is different, is