15. A rug manufacturer has decided to use five compatible colors in her rugs. However, in weaving a rug, only four spindles can be used. In advertising, the rug manufacturer wants to indicate the number of different color groupings for sale. How many color groupings using the five colors taken four at a time are there? (This assumes that four different colors will go into each rug-in other words, there are no repetitions of color.)
15. A rug manufacturer has decided to use five compatible colors in her rugs. However, in weaving a rug, only four spindles can be used. In advertising, the rug manufacturer wants to indicate the number of different color groupings for sale. How many color groupings using the five colors taken four at a time are there? (This assumes that four different colors will go into each rug-in other words, there are no repetitions of color.)
Chapter9: Sequences, Probability And Counting Theory
Section9.5: Counting Principles
Problem 40SE: A family consisting of 2 parents and 3 children is to pose for a picture with 2 family members in...
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