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OpenStudy (anonymous):
The freshman class has 160 students. Each freshman must write three reports from a list of 12 novels that the teacher has assigned them to read. How many different combinations of novels can a freshman student choose to write reports on?
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OpenStudy (mathteacher1729):
How did you obtain 480?
OpenStudy (anonymous):
220?
OpenStudy (mathteacher1729):
How did you obtain 220?
OpenStudy (mathteacher1729):
Without any explanation of your reasoning, I have no idea how you are approaching the problem, and I can't really offer any meaningful feedback.
OpenStudy (mathteacher1729):
You may find this link about combinations and permutations useful review: http://www.mathsisfun.com/combinatorics/combinations-permutations.html
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OpenStudy (anonymous):
ok thanks
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