Page 176 - Math Course 1 (Book 2)

Permutations and Combinations

Skill Practice!

Tell whether each situation is a permutation or combination. Then solve.

1. How many ways can 6 student desks be arranged in a row?

2. How many ways can 18 baseball cards be passed out to 2 students?

3. How many ways can 10 students line up for lunch?

4. How many ways can you choose 4 CDs from a stack of 8 CDs?

5. How many ways can 3 pairs of shoes be chosen from 8 pairs?

6. How many ways can 9 runners be arranged on a 4-person relay team?

Find each value.
7. 9! 8. 5! 9. 3!

10. 4! 11. 6! 12. 12!

13. SPORTS The Eastern Division of a baseball league is composed of 5 teams. How many different ways
can teams of the Eastern Division f nish?

14. LEISURE The local hobby store has 17 model airplanes to display. If the front case holds 6 models, how
many ways can 6 planes be chosen for the front of the store?

15. ZOOS The local zoo has 23 animals it can take on visits to schools and other community centers. How
many ways can the zoo directors choose 9 animals for a trip to a middle school?

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