John is one of twelve members of the Math Honor Society at his school. A delegation of four members must be chosen to represent the school in the Math Competition. How many different delegations could...

John is one of twelve members of the Math Honor Society at his school.  A delegation of four members must be chosen to represent the school in the Math Competition.

How many different delegations could be chosen that include John?

How many different delegations could be chosen that do not include John?

There are ____combinations including John and ___ different combinations excluding John.