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10. Four seniors will speak at graduation. If 30 students audition to speak, how many different groups of 4 speakers can be selected? 30 64

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10. Four seniors will speak at graduation. If 30 students audition to speak, how many different groups of 4 speakers can be selected? 30 64 - 274105 11. On a test, a student must answer 6 out of the first 8 questions, and 4 out of the next 7 questions. In how many ways can this be done

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