AMC 8 1990 Problem 14
AMC8 1990 年第 14 题
概率★★★☆☆
A bag contains only blue balls and green balls. There are 6 blue balls. If the probability of drawing a blue ball at random from this bag is $1/4$, then the number of green balls in the bag is
一个袋子里只有蓝球和绿球。有 6 个蓝球。如果从袋中随机抽到蓝球的概率是 $1/4$，则袋中绿球的数量是
- A.12
- B.18
- C.24
- D.30
- E.36
正确答案 · Correct Answer
B
解析 · Solution
解析整理中
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