Permutations and Combinations Help

[mathstudent]

Help!!! I got this problem for homework and I am confused.
How many 3 digit number be made from the digits 2,4,6, 8 if no digit is repeated?

 

[skeeter]

using the digits 2, 4, 6, and 8, you have ...

4 choices for the first digit

3 choices for the second digit

2 choices for the third digit

so ... how many three-digit numbers can you make?