A gum ball machine had 7 red and 5 yellow gum balls left. You put pennies until you empty the machine. How many different sequences of red and yellow gum balls can come out of the machine?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter6: Ratio, Proportion, And Probability
Section6.8: The Multiplication Principle
Problem 2E
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A gum ball machine had 7 red and 5 yellow gum balls left. You put pennies until you empty the machine. How many different sequences of red and yellow gum balls can come out of the machine?
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