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通过学习概率,我们知道概率的大小可以反映事件发生的频率程度.我们可以用多次重复实验的方法估计概率,也可以通过树状图理性分析预测概率.现实生活中,我们常会遇到用抽签的方法来决定一件事情,抽签有先后,对各人公平吗?现在我们举一个简单的例子来分析一下.例在4张票中有1张奖票,4个人按照一定的顺序,从中抽取1张来决定谁得到其中的奖票.先抽还是后抽(后抽人不知道先抽人
By learning the probability, we know that the probability of the size of the event can reflect the frequency of occurrence.We can use multiple repeated experiments to estimate the probability of probability can also be used to predict the probability of dendritic rational analysis.In real life, we often encounter by lottery Way to decide on one thing, the lottery has one after another, to everyone fair? Now we give a simple example to analyze .Example in the four votes in a ticket, four people in accordance with a certain order, from which to draw 1 to decide who won one of the tickets first or after the pumping (after the pumping people do not know the first pumping people