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A group of n people is categorized as follows.
9 people are taller than 6 feet.
14 people are shorter than $$5\frac{1}{2}$$ feet.
12 people are under 21 years old.
If each person in the group is in at least one of the three categories, then n can be any integer between
9 people are taller than 6 feet.
14 people are shorter than $$5\frac{1}{2}$$ feet.
12 people are under 21 years old.
If each person in the group is in at least one of the three categories, then n can be any integer between
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· 相关考点
6.1.5 三集合问题
6.1.5 三集合问题
以上解析由 考满分老师提供。
