test2reviewsols

test2reviewsols - This is just a sketch of the solution to...

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This is just a sketch of the solution to some of the problems from the review sheet which are not covered in the back of the book. Chapter 7 review, problem 6 : There are ( 4 3 ) choices for the three kings, and ( 48 2 ) choices for the two non-kings, for a total of ( 4 3 )( 48 2 ) . Chapter 7 review, problem 8 : There are ( 12 3 ) choices for which three people go in group A , ( 9 3 ) choices for which three people go in group B , and so on, for a total of ( 12 3 )( 9 3 )( 6 3 )( 3 3 ) . If the groups do not have names, then we need to divide by 4! because there are 4! different ways the groups can be ordered. Chapter 7 review, problem 16 : (a): Repetition is allowed (you can get the same kind of gum more than once), and order doesn’t matter (you’re just buying 10 balls). n = 7 and r = 10, so the answer is ( 16 10 ) . (b): We assign three balls to red, leaving 7 balls for the remaining 6 colors. Answer: ( 12 7 ) . (c): We assign one to each color, leaving 3 balls to be split among 7 colors. Answer:
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test2reviewsols - This is just a sketch of the solution to...

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