15. Alicia wants to give two gifts to her best friend.
One gift will be a necklace and one will be a
shirt. There are four different shirts choices and
seven necklace choices.

Part A: How many different gift combinations
can Alicia give to her best friend?
Part B: After giving one shirt and one necklace to her best friend, Alicia
has three shirts and six necklaces left. How many gift combinations
could Alicia give to another friend?​