Bob's Party
Trick brain teasers appear difficult at first, but they have a trick that makes them really easy.
Bob was having a big party. He decided on a technique to get lots of people to come. He invited his five closest friends and said that they could each invite 4 people.
Each of those could invite 3.
Each of those could invite 2.
Each of those could invite 1.
Overall, how many people did Bob invite to his party?
Each of those could invite 3.
Each of those could invite 2.
Each of those could invite 1.
Overall, how many people did Bob invite to his party?
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