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Mathematics 13 Online
OpenStudy (anonymous):

Rafael is taking a test that contains a section of 12 true-false questions. How many of the possible groups of answers to these questions have exactly 8 correct answers of false? a.425 b.495 c.500 d.515

OpenStudy (anonymous):

@Mertsj can you please help me?

OpenStudy (anonymous):

It's a combination. 12 choose 8

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