A homeowner puts a passcode-enabled lock on her front door. To choose a passcode, she must choose a number, a letter from a list
of 5 letters, and then another number. Number Letter Number
0 A 0
1 E 1
2 I 2
3 O 3
4 U 4
5 5
6 6
7 7
8 8
9 9
How many possible passcodes can she make?
