AMC 8 2014 Problem 18

AMC8 2014 年第 18

概率★★★☆☆
Four children were born at City Hospital yesterday. Assume each child is equally likely to be a boy or a girl. Which of the following outcomes is most likely?
昨天城市医院出生了 4 个婴儿,假设每个婴儿是男孩还是女孩的概率是相等的。那么下面哪种结果是最有可能的? (A)all 4 are boys|4 个都是男孩 (B)all 4 are girls|4 个都是女孩 (C)2 are girls and 2 are boys|2 个是男孩,2 个是女孩 (D)3 are of one gender and 1 is of the other gender|3 个是同一性别,另外 1 个是不同性别 (E)all of these outcomes are equally likely|上述这些结果都是等可能的
  1. A.All 4 are boys
  2. B.All 4 are girls
  3. C.2 are girls and 2 are boys
  4. D.3 are of one gender and 1 is of the other gender
  5. E.All of these outcomes are equally likely

正确答案 · Correct Answer

D

解析 · Solution

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