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In class of thirty two, twenty students are to be selected to represent the class. In...

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Basic Math



In class of thirty two, twenty students are to be selected torepresent the class. In how many ways can this be done, if :

(a) Paul refuses to represent the class?

(b) Michelle insists on representing the class?

(c) Jim and Michelle insist on representing the class?

(d) Either Jim or Michelle (or both) will represent theclass?

(e) Paul and Michelle refuse to represent the class together?

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Answer & Explanation Solved by verified expert
3.6 Ratings (379 Votes)
Number of ways to select r items from n nCr nr X nr Number of students in class 32 Number of students to be selected 20 a If Paul refuses to represent the class 20 students are to be selected    See Answer
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