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Find the number of ways that Magnus can give out $9$ identical stickers to $2$ of his friends, if every friend gets at least one sticker.

 Jun 7, 2024
 #1
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To make sure that all of them get at least one, let's just give them each one to start off with. Now, it's just how to divide 7 identical stickers among 2 people, and there are 8 possible ways to do that (Person one can get 0 - 7 stickers, and the rest go to person 2).

 Jun 9, 2024

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