| DS:
What is the probability that a student randomly selected from a class of 60 students will be a male who has brown hair?
(1) One-half of the students have brown hair.
(2) One-third of the students are males.
偶选C，因为觉得是独立事件，答案是E。谁来帮我简单讲讲怎么判断独立事件啊？概率10年前学的了。 | 
