1. How many ways can 3 CDs be selected from a stack of 7 different CDs? A. 35 B. 6 C. 5040 D. 245 Hint 2. An art gallery has 10 paintings to display. Six of the paintings are to be used for a new exhibit. Is this situation a permutation or combination? How many choices of paintings are possible? A. combination; 151,200 B. permutation; 151,200 C. combination; 210 D. permutation; 210 Hint 3. You have an assignment for an art class to paint a painting using only four colors. Visiting an art store, you find 20 colors from which to choose. How many different combinations of colors are there? A. 24 B. 4,845 C. 74 D. 116,280 Hint 4. Which situation is a permutation? A. The number of ways you can choose 3 hot dog toppings from a total of 5. B. The number of ways 8 students can finish first, second, or third place at the Math Olympiad. C. The number of ways each person can shake hands with the other 11 people in the room. D. The number of games it would take to start 5 different basketball players from a team of 10. Hint 5. Which situation is a combination? A. The number of ways a committee can choose a president, vice-president, and treasurer. B. The number of ways 3 books can be displayed in a store window. C. The number of ways 50 people can line up to enter a concert hall. D. The number of ways a coach can choose 3 co-captains for a soccer team. Hint