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12. If a sample of 1 can be drawn from an automatic storage and retrieval rack with 3 different storage racks and 6 different trays in each rack, what is the number of different ways of obtaining the sample of 1? 13. A small model-airplane motor has four starting components: key, battery, wire, and glow plug. What is the probability that the system will work if the probability that each component will work is as follows: key (0.998), battery (0.997), wire (0.999), and plug (0.995)? 14. An inspector has to inspect products from three machines in one department, five machines in another, and two machines in a third. The quality manager wants to vary the inspector's route. How many different ways are possible? 15. If, in Example Problem 8-10 of the hit-and-run driver, there were 1 numeral and 1 letter, how many automobiles would need to be investigated? 16. A sample of 3 is selected from 10 people on a Caribbean cruise. How many permutations are possible? 17. From a lot of 90 airline tickets, a sample of 8 is selected. How many permutations are possible? 18. A sample of 4 is selected from a lot of 20 piston rings. How many different sample combinations are possible? 19. From a lot of 100 hotel rooms, a sample of 3 is selected for audit. How many different sample combinations are possible? 20. A sample of 2 is selected from a tray of 20 bolts. How many different sample combinations are possible? 21. In the Illinois lottery, the numbers available are 1 to 54. On Saturday night, 6 numbers are selected. How many different combinations are possible?

12. If a sample of 1 can be drawn from an automatic storage and retrieval rack with 3 different storage racks and 6 different trays in each rack, what is the number of different ways of obtaining the sample of 1?
13. A small model-airplane motor has four starting components: key, battery, wire, and glow plug. What is the probability that the system will work if the probability that each component will work is as follows: key (0.998), battery (0.997), wire (0.999), and plug (0.995)?
14. An inspector has to inspect products from three machines in one department, five machines in another, and two machines in a third. The quality manager wants to vary the inspector's route. How many different ways are possible?
15. If, in Example Problem 8-10 of the hit-and-run driver, there were 1 numeral and 1 letter, how many automobiles would need to be investigated?
16. A sample of 3 is selected from 10 people on a Caribbean cruise. How many permutations are possible?
17. From a lot of 90 airline tickets, a sample of 8 is selected. How many permutations are possible?
18. A sample of 4 is selected from a lot of 20 piston rings. How many different sample combinations are possible?
19. From a lot of 100 hotel rooms, a sample of 3 is selected for audit. How many different sample combinations are possible?
20. A sample of 2 is selected from a tray of 20 bolts. How many different sample combinations are possible?
21. In the Illinois lottery, the numbers available are 1 to 54. On Saturday night, 6 numbers are selected. How many different combinations are possible?

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