SOLUTION: In a given examination, a student is required to answer 5 of the 7 questions including 3 of the first 4 questions. In how many ways can he answer the examination?
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Question 987639: In a given examination, a student is required to answer 5 of the 7 questions including 3 of the first 4 questions. In how many ways can he answer the examination? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! In a given examination, a student is required to answer 5 of the 7 questions including 3 of the first 4 questions. In how many ways can he answer the examination?
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# of ways to answer 3 of 4 = 4C3 = 4 ways
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# of ways to select 2 of last 3 = 3C2 = 3 ways
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Ans: 4*3 = 12 ways to answer the exam
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Cheers,
Stan H.
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