Problem 1:A bag contains 4 red chips,3 bluechips,and 2 white chips.If one chip is drawn at ran-dom,what is the probability that the chip will not be red?Express your answer as a common fraction.Problem 1:A bag contains 4 red chips,3 blue chips,and 2 white chips. If one chip is...
A bag contains 4 green marbles and 6 yellow marbles. If two marbles are randomly picked one after another without replacement, the probability of getting a green marble first and then a yellow marble is _. A. 4/15 B. 8/15 C. 4/21 D. 2/9 ...
A bag contains 4 green balls and 6 yellow balls. If two balls are drawn randomly with replacement, what is the probability of getting two green balls? A. 4/25 B. 4/9 C. 16/100 D. 1/4 相关知识点: 试题来源: 解析 B。解析:因为是有放回抽取,每次抽中绿球的概率都是 4/10,两次都...
A bag contains 4 green marbles and 6 yellow marbles. If you pick a marble without looking, the probability of getting a green marble is ___. A. 性美性美2/5性美性美 B. 多点每层及先才军至图确说正同处多点每层及先才军至图确说正同处3/5多点每层及先才军至图确说正同处多点每层及...
A bag contains 4 green marbles and 6 yellow marbles. If two marbles are drawn without replacement, what is the probability that both are green? A. 2/15 B. 4/15 C. 6/15 D. 8/15 相关知识点: 试题来源: 解析 A。首先计算第一次抽到绿色 marble 的概率为 4/10,因为总共有 10 个 ...
A box has 5 blue and 4 red balls. One balls is drawn at random and ... 03:23 A bag contains 3 white and 2 black balls and another bag contains 2 ... 02:36 A bag contains (2n+1) coins. It is known that n of these coins have a ... 04:06 One bag contains 4 white and...
A bag contains 8 red balls and 4 blue balls. What is the ratio of red balls to blue balls? A. 1:2 B. 2:1 C. 3:1 D. 1:3 相关知识点: 试题来源: 解析 B。选项 A1:2 错误;选项 B8 个红球,4 个蓝球,红球与蓝球比例是 2:1,正确;选项 C3:1 错误;选项 D1:3 错误。
外始叫被清外始叫被清A bag contains 3 red balls and 2 blue balls. The probability of randomly dr
We can divide the case of all beads in the bag being red after three replacements into three cases. The first case is in which the two green beads are the first two beads to be chosen. The probability for this is 24×14×44=18. The second case is in which the green beads are chos...
A bag contains n red marbles and 18 yellow marbles. A marble is drawn randomly from the bag. If the probability of choosing a red marble is 13, find the value of n. A.6 B.7 C.8 D.9 相关知识点: 试题来源: 解析 D 反馈 收藏 ...