You and your friends have decided to go to The Kentucky Derby. There are 12 hors

Question

You and your friends have decided to go to The Kentucky Derby. There are 12 horses in the race. How many ways can the horses come in first, second, or third? Steps for Calculation: Is this an example of a combination or a permutation? What is N? What is r? What is the calculated value for this example? You have 16 friends that you want to invite to dinner. However, you dining room table only seats 6 people. Since, you will take up one seat, you can only have five friends at one time. How many different groups of guests can you have? Steps for Calculation: Is this an example of a combination or a permutation? What is N? What is r? What is the calculated value for this example? With a combination 'order matters'. 5! is equal to 120. Which one of the following is NOT one of the major uses of the CPI? The CPI is used to evaluate and determine economic policy The CPI is used to compare prices in different years. The CPI is used to determine salary and price adjustments. All of the above three answers are major uses of the CPI.

Explanation / Answer

1)

permutation

2)

N= 12

3)

r = 3

4)

value = 12P3 = 1320

5)

combination

6)

N= 16

7)

r = 5

8)

value = 16C5 = 4368

9)

No,

10)

5! = 1 * 2 * 3 * 4 * 5 = 120

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