SOLUTION: Please help me solve this question:A student must answer 8 out of 10 questions.How many choices does he have if the first 3 questions have to be answered?
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Question 983585: Please help me solve this question:A student must answer 8 out of 10 questions.How many choices does he have if the first 3 questions have to be answered? Answer by reviewermath(1029) (Show Source):
You can put this solution on YOUR website! A student must answer 8 out of 10 questions.How many choices does he have if the first 3 questions have to be answered?
Solution:
The number of questions remaining after answering the first 3 questions is 7.
The student must select 5 of the remaining 7 questions.
Therefore, we simply compute the number of combinations of 7 objects taken 5 at a time. =
