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Mathematics 15 Online
OpenStudy (anonymous):

how many relay teams of 4 members be chosen from a 5 member team to run in a relay race?

OpenStudy (amistre64):

so, you have a group of 5, and want to choose 4 .... 5 choose 4

OpenStudy (amistre64):

use your formula for combinations nCr

OpenStudy (anonymous):

Which is n and which is r?

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