Sherry supervises a crew of maintenance engineers for an office building. If there are 5 experienced maintenance engineers and 3 apprentice engineers and the engineers are sent out on jobs in teams, which of the following must be true?

Indicate all possible values.

1. There are 10 different 3-person teams of experienced engineers she could send.
2. There are 3 different 2-person teams of apprentice engineers she could send.
3. There are 2 different 2-person teams of apprentice engineers she could send.
4. There are 10 different 2-person teams of experienced engineers she could send.
5. There are 10 different 4-person teams of experienced engineers she could send.