Directions:

Identify whether the given problem is PERMUTATION or COMBINATION.
Solve the problems.

1. How many different four-letter passwords can be created for a software access if no letter can be used more than once?

2. Box A contains 7 balls and Box B contains 16 balls. How many different selections of 10 balls each can be made if 3 balls are to be selected from box A and 7 from Box B?