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歡迎您訪問數學考題練習:一個不透明的袋子里裝有6個紅球,從中隨機摸出一!

數學考題練習:一個不透明的袋子里裝有6個紅球,從中隨機摸出一

更新時間:2024-01-12 16:28:39作者:貝語網校

一個不透明的袋子里裝有6個紅球,從中隨機摸出一球,若摸到白球的概率是P1,摸到紅球的概率是P2,則

A.P1=0,P2=1

B.P1=P2=1

C.P1=0,P2=

D.P1=P2=

試題答案

A

試題解析

根據題意可知摸到紅球是必然發生的事件,摸到白球的概率是不可能發生事件,即可求出P1,P2的值.

解答:由題意可知:摸到紅球是必然發生的事件,摸到白球的概率是不可能發生事件,

所以P1=0,P2=1,

故選A.

點評:本題考查了必然發生的事件的概率P(A)=1;不可能發生事件的概率P(A)=0,屬于基礎性題目,比較簡單.

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