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25-01-2017
Mathematics

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The mathematicians at Sun Tan University have published 14 research papers this year. The department chair wants to display them in the lobby. The display case can show 4 at a time. How many arrangements of 4 research papers are possible?

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DocInTardis DocInTardis

25-01-2017

It would 3 three. Divide the papers into groups of four, and two would be left out.

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