(概率问题)约会
移民生活北美论坛 -> 温哥华不眠夜

#1: Author: 青木Posted: 2013-1-12 10:05

两个人相约每天5点到6点间相会,先到者等候另一人20分钟,过时就离去,求两人能见面的概率? dqvoas.gif

答案是55.56%。
要求过程。 icon_biggrin.gif

#2: Author: 任飞翔Posted: 2013-1-12 10:18

75%

#3: Author: 四叶草Posted: 2013-1-12 12:25

1-(40/60)^2

#4: Author: 青木Posted: 2013-1-12 13:55

四叶草 _BBCODE_WROTE:
1-(40/60)^2


tiger27.gif

#5: Author: 步步为营Posted: 2013-1-12 15:39

1/60 * (20/60 + 21/60 + 。。。+39/60+40/60+。。。+39/60+。。。+20/60)=55%。




移民生活北美论坛 -> 温哥华不眠夜


output generated using printer-friendly topic mod, All times are GMT - 8 Hours

Page 1 of 1

Powered by phpBB 2.0.8
Content received from: 加西网 (温哥华门户), http://www.vancouverren.com