SOLUTION: In how many ways can a 3 digit number be formed using the numbers 0-9, if each digit is used only one time? help please Thank you! show all work please :)

A 3-digit number CANNOT have 0 as its first or hundreds digit

Therefore, first digit can be any of 9 digits (1 - 9)

Second digit can be any of 9 digits (0, or any digit except the first digit)

Third digit can be any of 8 digits (Any digit except the first or second digit)

Number of ways: 9(9)(8), or