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how many ways can rudy choose 5 pizza toppings from a menu of 20 toppings if each topping can only be chosen once?
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how many ways can rudy choose 5 pizza toppings from a menu of 20 toppings if each topping can only be chosen once?

User Vihung
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1 Answer

1 vote
20x19x18x17x16
Each time she can choose one less type of toppings.
User John Von Neumann
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