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(a) Find the number of ways that Magnus can give out 20 identical stickers to 5 of his friends.  (Not everyone has to get a sticker.)

 

(b) Find the number of ways that Magnus can give out 20 identical stickers to 5 of his friends, if every friend gets at least one sticker.

 Feb 10, 2023
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a) Each sticker can go to one of five friends, meaning that there are 5^20 ways.

 Feb 11, 2023

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