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Applications of Combinatorics
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In a group of 10 people, how many ways can we select a president, a vice president, and a secretary?
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A
720
💡 Explanation:
We can use the multiplication principle. There are 10 ways to choose the president, 9 ways to choose the vice president, and 8 ways to choose the secretary. Therefore, the total number of ways is 10 x 9 x 8 = 720.