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歡迎您訪問數學考題練習:下列屬于不可能發生的事件是!

數學考題練習:下列屬于不可能發生的事件是

更新時間:2024-01-12 12:56:00作者:貝語網校

下列屬于不可能發生的事件是

A.大年初一晚上,可以看到一個大圓盤似的月亮

B.明年我校高中升學率達100%

C.體育課在教室上

D.打開電視機,正在播放新聞

試題答案

A

試題解析

不可能事件是指在一定條件下,一定不發生的事件.

解答:B,C,D都是不確定事件,

大年初一是一定沒有月亮的,所以屬于不可能發生的事件的是大年初一晚上,可以看到一個大圓盤似的月亮.

故選A.

點評:理解概念是解決這類基礎題的主要方法.

必然事件指在一定條件下,一定發生的事件;

不可能事件是指在一定條件下,一定不發生的事件;

不確定事件即隨機事件是指在一定條件下,可能發生也可能不發生的事件.

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