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7. There are 15 elected members of the Board of Directors. In how many ways can a president, a vice-preside a secretary and a treasurer be elected from the board? A 7.290 C. 32, 670 B. 7.920 D. 32.760
8. In how many can 8 people be seated around a circular table if two of them insist on sitting beside each oth A. 360 C. 1,440 B 720 D 5.040
9. in a town fiesta singing competition with 12 contestants, in how many ways can the organizer arrange the first three singers? A12 C1270 B. 990 D 1.716
10. Order is important in permutation while it is not in A Combination C. Permutation B. Integration D. Unique permutation 11. How many possibilities are there in selecting a committee of 3 members from a club of 21 members A 1.330 C. 3.990 B. 7980 D. 9.261
12. Which of the following situations does NOT illustrate a combination? A Enumerating the subsets of a set B Fixing the schedule of a group of students who must take exactly 8 subjects C Identifying the lines formed by connecting some given points on a plane D. Selecting 2 songs from 10 choices for an audition piece
13. Which of the following sinations or activities involves combination? A Choosing a leader and assistant from 5 members of a group B. Choosing five of your friends to attend a seminar C. Dotermining the top three Isedors in a math bec D. Forming 3-digit number using 8,47
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