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[体育菠菜心得方法] 用概率来了解Dubo游戏
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1#
据说最早研究概率的人叫帕斯卡.他是法国的一位天才,他留下这样一个名言“人类是能思考的芦苇”,他也同样喜欢Dubo,他的朋友中有一位是Dubo专家,名叫杜马莱.4 \$ M( B/ H9 w! k- N7 K3 o% i
有一决杜马莱对帕斯卡提出如下问题:“实力相等胜负可能性各占一半的两个人A和B进行了第三次胜负的争夺战(三局两胜).第一个回合A取胜时,由于某种情况争夺不得不中断,下的赌钱应该如何分配才好呢?
; J$ W! u- U8 m  n/ R, M& w帕斯卡不愧是天才,他这样回答了杜马莱的问题;“先做一个树结构图,根据树结构图A胜的概率是3/4时,就把赌钱的3/4分给A,把剩下的1/4分给B就可以了.”于是,概率的计算就这样产生了.8 s$ o! U  o( A& z7 H
某种事件A发生的“概率”就是将A发生的事件数除以全部事件数(发生一切事件的情况).$ ?6 `7 c6 \- |: r) Y
在Dubo中的确有“没被发现的技术手段——作弊”,可要十分当心啊.这么说来也许有人认为“还是不Dubo的好!”.但是帕斯卡如果不参与Dubo,概率这门学问的发展很可能没这么早.6 l! W9 N' T0 Y( A+ v( O6 D$ p
不过,任何事都会各有利弊.6 \' n1 i0 m: v4 L" g/ P
吃剩下的东西有福气8 C+ a) }' B' w
很多人拘泥抽签顺序.可是,中签的概率并不依赖于抽签顺序,下面我们进行一下论证.
6 z/ b6 q2 M2 A4 y6 S! M! q& ^这里有10个签,其中只有一个是要中的签.两个人抽签时,我们把第一个抽签和第二抽签的中签概率做一比较./ r3 E. z. X; \) N
首先,第一个抽签人的中签概率是1/10.- O& W7 e" @# `6 y; g9 J6 K
然后考虑第二个抽签人的中签概率,分第一个人中签以及不中签两种情况进行计算.
/ k4 S; l/ ]2 H5 b9 ](a)第一个人中签的情况(概率为1/10).因为别人不会再有中签的机会了,所以概率是零.
0 T0 o! ^- K7 S7 i; f(b)第一个人不中签的情况(其概率为9/10).因为剩下的9个签只有1个签是要中的签,所以在9个签中中一个签的概率是1/9.于是,第一个人不中签的概率是(9/10),中签(1/9)的概率就是1/9×9/10=1/10.这样一来,第二个人中签的概率就是由(a)+(b)得:0+1/10=1/10.这和第一个抽签人的中签概率相同.8 Y2 `' j7 x/ Q) U* ]& P( u
尽管如此,还是希望第一个抽签的人多.总是认为:如果第一个人中签的话,后面的人就没有中签的机会了,所以如果自己不第一个抽,那么就感到自己的命运是被别人决定似的.如果后抽的人中签的话,自然就会想起这样的谚语“吃剩下的东西有福气”.
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2#
看来Dubo还要学习科学知识
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3#
赌球不需要什么概率,庄家就是吃水的
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4#
学习科学知识
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5#
主题回复处广告图案-天策传媒
看看楼主的推荐
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6#
新人来学习下,谢谢楼主。
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7#
谢谢楼主的心得分享!
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:) :( :D :'( :@ :o
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:loveliness: :funk: :curse: :dizzy: :shutup: :sleepy:
:hug: :victory: :time: :kiss: :handshake: :call:
:) :( :D :'( :@ :o
:P :$ ;P :L :Q :lol
:loveliness: :funk: :curse: :dizzy: :shutup: :sleepy:
:hug: :victory: :time: :kiss: :handshake: :call:
:hug: :victory:
:) :( :D :'( :@ :o
:P :$ ;P :L :Q :lol
:loveliness: :funk: :curse: :dizzy: :shutup: :sleepy:
:hug: :victory: :time: :kiss: :handshake: :call:
:hug: :victory: :time: :kiss: :handshake: :call:
:hug: :victory: :time: :kiss: :handshake: :call:
:hug: :victory: :time: :kiss: :handshake: :call:
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