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。

这题准确的说不是考概率，而是问你能否求得number of brown hair male。

条件1，2或联立都不能求得，故选E