# Combination permutation

**Question description**

A bin contains 15 red balls and 16 white balls.How many ways are there to choose three balls from the bin so that at least two are red?

## Tutor Answer

Brown University

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California Institute of Technology

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Carnegie Mellon University

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Columbia University

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Dartmouth University

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Emory University

2279 Tutors

Harvard University

599 Tutors

Massachusetts Institute of Technology

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New York University

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Notre Dam University

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Oklahoma University

2122 Tutors

Pennsylvania State University

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Princeton University

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Stanford University

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University of California

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Oxford University

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Yale University

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