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歡迎您訪問數(shù)學(xué)考題練習(xí):用寫有0,1,2的三張卡片排成三位數(shù)是偶數(shù)的概!

數(shù)學(xué)考題練習(xí):用寫有0,1,2的三張卡片排成三位數(shù)是偶數(shù)的概

更新時(shí)間:2024-01-12 16:42:46作者:貝語網(wǎng)校

用寫有0,1,2的三張卡片排成三位數(shù)是偶數(shù)的概率為

A.

B.

C.

D.

試題答案

A

試題解析

根據(jù)用寫有0,1,2的三張卡片排成三位數(shù)有:102,120,201,210四個(gè),由此即可求出答案.

解答:用寫有0,1,2的三張卡片排成三位數(shù)有:102,120,201,210四個(gè),是偶數(shù)的有3個(gè),

所以排成三位數(shù)是偶數(shù)的概率為,故選A.

點(diǎn)評(píng):本題利用了列舉法求概率.用到的知識(shí)點(diǎn)為:概率=所求情況數(shù)與總情況數(shù)之比.

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