An ice cream shop serves 5 different flavors of ice cream: chocolate, strawberry, banana, vanilla, and mango. You have paid for a 3-scoop bowl of ice cream.
a) Assume you are only allowed at most 1 scoop of each flavor. How many different 3-scoop bowl variations can you have?
b) Now assume that flavor repetitions are allowed (for example, you can have all 3 scoops be chocolate). How many different 3-scoop bowl variations can you have in this case?
Note: The actual arrangement of the scoops in the bowl is not important.