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In a survey of 100 teenagers, 71 of the teenagers reported using at least one of three social media sites-$$A, B$$, and C-and 30 reported using all three sites. At least 15 of the teenagers reported using only site A and
at most 15 of the teenagers reported using only site $$B$$. Which of the following values could be the number of teenagers who reported using only site $$C$$?
Indicate all such values.
A,B,C显示答案
· 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。
