10. Sequences, Induction, and Probability
Counting Principles, Permutations, and Combinations
Problem 30
Textbook Question
Textbook QuestionUse the Fundamental Counting Principle to solve Exercises 29–40. A popular brand of pen is available in three colors (red, green, or blue) and four writing tips (bold, medium, fine, or micro). How many different choices of pens do you have with this brand?

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