A physics exam consists of 9 multiplechoice questions and 6 openended problems in which all work must be shown. If an examinee must answer 5 of the multiplechoice questions and 2 of the openended problems, in how many ways can the questions and problems be chosen?
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2 answers

ways to choose 5 of the 6 multiple choices
= C(9,5) = 126
number of ways to choose 2 of the 6 essay questions
= C(6,2) = 15
number of ways to answer the test
= 126x15 or 1890 ways 👍
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answered by Reiny 
1890
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answered by Junior
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