How many three-digit numbers can be made from the digits 1, 2 and 3 if each digit must be used exactly once?
Show hints
- Select the hundreds digit, then the tens digit.
- Multiply 3, 2 and 1 possible choices.
Show the answer and solution
Answer: 6
There are 3 choices for the first place, 2 for the second, 1 for the last. It turns out 3 × 2 × 1 = 6 numbers.