In a common carnival game, three balls are rolled down an
Chapter 10, Problem 46(choose chapter or problem)
In a common carnival game, three balls are rolled down an incline into slots numbered 1 through 9, as shown in the figure. Because the slots are so narrow, players have no control over where the balls collect. A prize is given if the sum of the three numbers is less than 7. Find the probability of winning a prize.
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