5. Rowena would like to invite 7 friends to go on a trip but has room for only 4 of them. In how many ways can they be chosen?

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ISBN:9781938168383
Author:Jay Abramson
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Chapter9: Sequences, Probability And Counting Theory
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5. Rowena would like to invite 7 friends to go on a trip but has room for only 4 of them. In how many
ways can they be chosen?
Transcribed Image Text:5. Rowena would like to invite 7 friends to go on a trip but has room for only 4 of them. In how many ways can they be chosen?
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