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A classroom contains 10 students. A student committee of 3 (president, vice-president, and treasurer) must be...

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Statistics

A classroom contains 10 students. A student committee of 3(president, vice-president, and treasurer) must be selected. HarryPotter will serve only as president only if either of his friendsRon Weasley or Hermione Granger serve as vice president; otherwisehe leaves the group. The others (including Ron and Hermione) haveno such restrictions. What is the probability that Ron or Hermionebecome the president of this group?

Answer & Explanation Solved by verified expert
3.7 Ratings (321 Votes)
Total number of waysHarry Potter will serve as president AND Ron will serve as vicepresident AND any one serve as treasurer isHarry Potter will serve as president    See Answer
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