三年高考(2017-2019)各地文科数学高考真题分类汇总:集合

合集下载
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集合

1.(2019全国Ⅰ文2)已知集合{}{}{}1,2,3,4,5,6,72,3,4,52,3,6,7U

A B ===,,,则U B A =I ð( )

A .{}1,6

B .{}1,7

C .{}6,7

D .{}1,6,7 2.(2019全国Ⅱ文1)已知集合={|1}A x x >-,{|2}B x x =<,则A ∩B =( ) A .(–1,+∞)

B .(–∞,2)

C .(–1,2)

D .∅

3.(2019全国Ⅲ文1)已知集合2{1,0,1,2}{1}A B x x =-=≤,,则A B =I ( )

A .{}1,0,1-

B .{}0,1

C .{}1,1-

D .{}0,1,2 4.(2019北京文1)已知集合A ={x |–11},则A ∪B =( )

(A )(–1,1) (B )(1,2) (C )(–1,+∞) (D )(1,+∞)

5.(2019天津文1)设集合, , ,则( )

(A ){2} (B ){2,3} (C ){-1,2,3} (D ){1,2,3,4}

6.(2019江苏1)已知集合{1,0,1,6}A =-,{|0,}B x x x =>∈R ,则A B =I .

7.(2019浙江1) 已知全集{}1,0,1,2,3U =-,集合{}0,1,2A =,{}1,0,1B =-,则U A B I ð=( )

A .{}1-

B .{}0,1

C .{}1,2,3-

D .{}1,0,1,3-

8.(2018全国卷Ⅰ)已知集合{0,2}=A ,{21012}=--,

,,,B ,则A B =I A .{0,2} B .{1,2} C .{0} D .{21012}--,

,,, 9.(2018浙江)已知全集{1,2,3,4,5}U =,{1,3}A =,则

A .∅

B .{1,3}

C .{2,4,5}

D .{1,2,3,4,5}

10.(2018全国卷Ⅱ)已知集合{}1,3,5,7A =,{}2,3,4,5B =,则A B =I

A .{3}

B .{5}

C .{3,5}

D .{}1,2,3,4,5,7

{}1,1,2,3,5A =-{}2,3,4B ={|13}C x R x =∈<„()A C B =I U =U A ð

11.(2018北京)已知集合{|||2}A x x =<,{2,0,1,2}B =-,则A B =I

A .{0,1}

B .{–1,0,1}

C .{–2,0,1,2}

D .{–1,0,1,2}

12.(2018全国卷Ⅲ)已知集合{|10}A x x =-≥,{0,1,2}B =,则A B =I

A .{0}

B .{1}

C .{1,2}

D .{0,1,2}

13.(2018天津)设集合{1,2,3,4}A =,{1,0,2,3}B =-,{|12}C x x =∈-

()A B C =U I

A .{1,1}-

B .{0,1}

C .{1,0,1}-

D .{2,3,4}

14.(2017新课标Ⅰ)已知集合{|2}A x x =<,{320}B x =->,则

A .3

{|}2

A B x x =

C .3{|}2A B x x =

D .A B =R U 15.(2017新课标Ⅱ)设集合{1,2,3}A =,{2,3,4}B =,则A B U =

A .{1,2,3,4}

B .{1,2,3}

C .{2,3,4}

D .{1,3,4}

16.(2017新课标Ⅲ)已知集合{1,2,3,4}A =,{2,4,6,8}B =,则A B I 中元素的个数为

A .1

B .2

C .3

D .4

17.(2017天津)设集合{1,2,6}A =,{2,4}B =,{1,2,3,4}C =,则()A B C =U I

A .{2}

B .{1,2,4}

C .{1,2,4,6}

D .{1,2,3,4,6}

18.(2017山东)设集合{}11M x x =-<,{}

2N x x =<,

则M N =I A .()1,1- B .()1,2- C .()0,2 D .()1,2 19.(2017北京)已知U =R ,集合{|22}A x x x =<->或,则U A ð=

A .(2,2)-

B .(,2)(2,)-∞-+∞U

C .[2,2]-

D .(,2][2,)-∞-+∞U

20.(2017浙江)已知集合{|11}P x x =-<<,{|02}Q x x =<<,那么P Q U =

A .(1,2)-

B .(0,1)

C .(1,0)-

D .(1,2)

答案

1.解析 因为{}1234567234{}}23{567U A B ===,,,,,,,,,,,,,,,

所以C 17{}6U A =,,, 则{67?}U B A =I ,ð. 故选C .

2.解析 (1,)A =-+∞,(,2)B =-∞,(1,2)A B =-I .故选C.

3.解析 因为{}1,0,1,2A =-,2{|1}{|1

1}B x x x x ==-剟?, 所以{}1,0,1A B =-I .故选A .

4.解析 由数轴可知,{}1A B x x =>U .故选C.

5.解析 设集合{}1,1,2,3,5A =-,{}13C x x =∈

故选D.

6.解析 因为{}1,0,1,6A =-,{}|0,B x x x =>∈R ,

所以{}{}{}1,0,1,6|0,1,6A B x x x =->∈=R I I .

7.解析 {1,3}U A =-ð,{1}U A B =-I ð

.故选A . 8.A 【解析】由题意{0,2}A B =I ,故选A .

9.C 【解析】因为{1,2,3,4,5}U =,{1,3}A =,所以{2,4,5}.故选C .

10.C 【解析】因为{}1,3,5,7A =,{}2,3,4,5B =,所以{3,5}A B =I ,故选C . 11.A 【解析】{|||2}(2,2)A x x =<=-,{2,0,1,2}B =-,∴{0,1}A B =I ,故选A .

12.C 【解析】由题意知,{|10}A x x =-≥,则{1,2}A B =I .故选C .

13.C 【解析】由题意{1,0,1,2,3,4}A B =-U ,∴(){1,0,1}A B C =-U I ,故选C .

14.A 【解析】∵3{|}2B x x =<,∴3{|}2

A B x x =

15.A 【解析】由并集的概念可知,{1,2,3,4}A B =U ,选A .

16.B 【解析】由集合交集的定义{2,4}A B =I ,选B .

17.B 【解析】∵{1,2,4,6}A B =U ,(){1,2,4}A B C =U I ,选B . =U A ð