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Mathematics 16 Online
OpenStudy (anonymous):

Michelle has a party and invited 3 friends. Each friend invites 3 other friends. Each of these friends invites 3 more friends. Finally, each of these friends invites 3 more friends. Each guest at the party brings gifts, with 3 bows on each gift. How many bows does Michelle get at the party? A 18 B 729 C 216 D 81

OpenStudy (anonymous):

start with 3 friends and each invited 3 friends, how many people is this so far?

OpenStudy (anonymous):

12 ?

OpenStudy (anonymous):

Yes, and each of these invited 3 friends, now how many do we have?

OpenStudy (anonymous):

23 ?

OpenStudy (anonymous):

27?

OpenStudy (anonymous):

ohhh im dumb

OpenStudy (anonymous):

Now each of these invite 3 friends, so we have how many in total?

OpenStudy (anonymous):

each 39 invites 3 ?

OpenStudy (anonymous):

sorry im not good at math...

OpenStudy (anonymous):

3 friends invite 9 friends invite 27 friends ... The 27 invite 3 friends??

OpenStudy (anonymous):

81?

OpenStudy (anonymous):

And now we have 3+9+27+81 and allow of these presents have 3 bows ...

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