要在一只不透明的袋中放入若干个只有颜色不同的乒乓球,搅匀后,

要在一只不透明的袋中放入若干个只有颜色不同的乒乓球,搅匀后,使得从袋中任意摸出一个乒乓球是黄色的概率是,可以怎样放球_______________________(只写一种)

答案

可放2个黄球3个白球

相关题目

摩托车在平直公路上从静止开始起动,a1 =1.6m/s2,稍后匀速运
摩托车在平直公路上从静止开始起动,a1 =1.6m/s2,稍后匀速运动,然后减速,a2=6.4m/s2,直到停止,共历时130s,行程1600m。试求: (1)摩托车行驶的最大
When I was 12, all I wanted was a signet (图章) ring. They were the “in”
When I was 12, all I wanted was a signet (图章) ring. They were the “in” thing and it seemed every girl except me had one. On my 13th birthday, my Mum gave me a signet ring with my initials (
---- You’re always working. Come on, let’s go shopping.  -        
---- You’re always working. Come on, let’s go shopping.  -         -- - you ever want to do is going shopping.       A. Anything     B. Something      C. All       D.
下列对右图漫画认识正确的是         A.对待传统文化
下列对右图漫画认识正确的是         A.对待传统文化要敢于创新            B.大众传媒不应该成为文化传播的主要手段 C.要充分发挥大
图2是我国东南沿海经济发达地区某新兴城市人口增长示意图
图2是我国东南沿海经济发达地区某新兴城市人口增长示意图。读图回答4—6题。 4.1997年至1998年,该城市的人口 增长率是(     )  A.16.7%     
Our environment isn't as green and beautiful as it should be.There are steel m
Our environment isn't as green and beautiful as it should be.There are steel monsters blocking out the sun. blowing out dangerous smoke,and letting out poisonous chemicals into rivers,cars producin
The band had recorded seven albums before they visited India.  
The band had recorded seven albums before they visited India.  
Not only ____ everything he ____ taken away but also his German citizenship.  
Not only ____ everything he ____ taken away but also his German citizenship.   A. 不填; has  B. has; had   C. has; was  D. was; had

最新题目