第九章 集合论测验

第九章 集合论测验

8th Grade

30 Qs

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第九章 集合论测验

第九章 集合论测验

Assessment

Quiz

Mathematics

8th Grade

Practice Problem

Hard

Created by

蔡佩芸 蔡佩芸

Used 15+ times

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30 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

 A={2,4,5,8,9,10}A=\left\{2,4,5,8,9,10\right\}  B={1,3,6,7,8,9,11}B=\left\{1,3,6,7,8,9,11\right\} ,求 A\B

1,3,6,7,11 }

2,4,5,10 }

8,9 }

2.

MULTIPLE SELECT QUESTION

1 min • 1 pt

设 A = {x|x是9的因数},问下列哪些关系是正确的?

 3A3\in A  

 {3}A\left\{3\right\}\in A  

 3A3\subset A  

 {3}A\left\{3\right\}\subset A  

3.

FILL IN THE BLANK QUESTION

1 min • 1 pt

Media Image

请列出集合X所有的元素(小到大)。

*只接受英文的逗号(,)*

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

 n(XYZ)n\left(X\cap Y\cap Z\right)  。


4

3

1

0

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

图中所示,各区域内的数表示该区域所含有的元素数量。如果 n(ξ)=40n\left(\xi\right)=40  ,求 n[(ABC)]n\left[\left(A\cup B\cup C\right)'\right]  。


7

33

 {1,2,4,5,6,7,8}\left\{1,2,4,5,6,7,8\right\}  

 {33}\left\{33\right\}  

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

集合Q={ x|x是小于 7 的正偶数 } 有多少个子集?

3

6

8

12

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A ={x| xR, 5x6x\in R,\ 5\le x\le6  }


请问集合A是有限集还是无限集?如果是有限集,写出该集合的基数。

无限集

有限集, n(A)=10n\left(A\right)=10  

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