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11.29 数学随堂测验

Authored by Han WANG

Mathematics

9th Grade

Used 6+ times

11.29 数学随堂测验
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10 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

不透明的袋子中装有红、绿小球各一个,除颜色外两个小球无其他差别,从中随机摸出一个小球,放回并摇匀,再从中随机摸出一个小球,那么第一次摸到红球、第二次摸到绿球的概率是(       )

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

同时抛掷两枚质地均匀的硬币,则一枚硬币正面向上、一枚硬币反面向上的概率是(       )

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

透明的袋子中装有两个小球,上面分别写着“1”,“2”,除数字外两个小球无其他差别.从中随机摸出一个小球,记录其数字,放回并摇匀,再从中随机摸出一个小球,记录其数字,那么两次记录的数字之和为3的概率是(       )

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

在一个不透明纸箱中放有除了数字不同外,其它完全相同的2张卡片,分别标有数字1、2,从中任意摸出一张,放回搅匀后再任意摸出一张,两次摸出的数字之积为偶数的概率为(       )

5.

FILL IN THE BLANK QUESTION

2 mins • 1 pt

Media Image

一只蚂蚁在如图所示的树枝上寻觅食物,假定蚂蚁

在每个岔口都会随机地选择一条路径,它获得食物的

概率是        

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A

B

C

D

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

A

B

C

D

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