挑战习题
1
/4
单选题
难度：
1.设集合
A
＝{1,2}，
B
＝{2,3}，则
A
∩
B
等于( )
A
{1,2,2,3}
B
{2}
C
{1,2,3}
D
{3}
提示1：
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正确答案：
Qg==
6Kej5p6Q77ya5rGC6ZuG5ZCI55qE5Lqk6ZuG77yM5bCx5piv5om+5Lik5Liq6ZuG5ZCI55qE5YWs5YWx5YWD57Sg77yB5YWx5pyJ55qE5YWD57Sg5pivMu+8geWGmeaIkOmbhuWQiOeahOW9ouW8j+WwseaYr3syfeaVhemAiUI=
2
/4
单选题
难度：
2.已知集合A＝{0,1,2,3,4,5}，B＝{1,3,6,9}，C＝{3,7,8}，则(A∩B)∪C等于( )
A
{0,1,2,6,8}
B
{3,7,8}
C
{1,3,7,8}
D
{1,3,6,7,8}
提示1：
IOeUseS6jumbhuWQiEHvvJ17MCwxLDIsMyw0LDV977yMQu+8nXsxLDMsNiw5fe+8jEPvvJ17Myw3LDh977yM5YiZ57uT5ZCI5Lqk6ZuG5ZKM5bm26ZuG5a6a5LmJ5Y+v55+l77yMQeKIqUIgPXsxLDN9
提示2：
IOWImShB4oipQiniiKpDPXsxLDMsNyw4fe+8jOaVhemAiUM=
正确答案：
Qw==
6Kej5p6Q77ya55Sx5LqO6ZuG5ZCIQe+8nXswLDEsMiwzLDQsNX3vvIxC77ydezEsMyw2LDl977yMQ++8nXszLDcsOH3vvIzliJnnu5PlkIjkuqTpm4blkozlubbpm4Yg5a6a5LmJ5Y+v55+l77yMQeKIqUIgPXsxLDN9LOWImShB4oipQiniiKpDPXsxLDMsNyw4fe+8jOaVhemAiUM=
3
/4
单选题
难度：
3.若全集
U
＝{1,2,3,4,5,6}，
M
＝{2,3}，
N
＝{1,4}，则集合{5,6}等于( )
A
B
C
(∁
U
M
)∪(∁
U
N
)
D
(∁
U
M
)∩(∁
U
N
)
提示1：
IOKItSYjODcwNTs8aT48c3ViPlU8L3N1Yj48L2k+PGk+TTwvaT7vvJ17MSw0LDUsNn3vvIwmIzg3MDU7PGk+PHN1Yj5VPC9zdWI+PC9pPjxpPk48L2k+77ydezIsMyw1LDZ977yM4oi0KCYjODcwNTs8aT48c3ViPlU8L3N1Yj48L2k+PGk+TTwvaT4p4oipKCYjODcwNTs8aT48c3ViPlU8L3N1Yj48L2k+PGk+TjwvaT4p77ydezUsNn3vvIziiLTpgIlELg==
正确答案：
RA==
6Kej5p6Q77ya4oi1JiM4NzA1OzxpPjxzdWI+VTwvc3ViPjwvaT48aT5NPC9pPu+8nXsxLDQsNSw2fe+8jCYjODcwNTs8aT48c3ViPlU8L3N1Yj48L2k+PGk+TjwvaT7vvJ17MiwzLDUsNn3vvIziiLQoJiM4NzA1OzxpPjxzdWI+VTwvc3ViPjwvaT48aT5NPC9pPiniiKkoJiM4NzA1OzxpPjxzdWI+VTwvc3ViPjwvaT48aT5OPC9pPinvvJ17NSw2fe+8jOKItOmAiUQuIA==
4
/4
单选题
难度：
4.已知全集
U
＝
R
，集合
A
＝{
x
|－2≤
x
≤3}，
B
＝{
x
|
x
＜－1或
x
＞4}，那么集合
A
∩(∁
U
B
)等于( )
A
{
x
|－2≤
x
＜4}
B
{
x
|
x
≤3或
x
≥4}
C
{
x
|－2≤
x
＜－1}
D
{
x
|－1≤
x
≤3}
提示1：
ICYjODcwNTs8aT48c3ViPlU8L3N1Yj48L2k+PGk+QjwvaT7vvJ17PGk+eDwvaT5877yNMeKJpDxpPng8L2k+4omkNH0=
提示2：
IDxpPkE8L2k+77ydezxpPng8L2k+fO+8jTLiiaQ8aT54PC9pPuKJpDN977yM5omA5LulPGk+QTwvaT7iiKkoJiM4NzA1OzxpPjxzdWI+VTwvc3ViPjwvaT48aT5CPC9pPinvvJ17PGk+eDwvaT5877yNMeKJpDxpPng8L2k+4omkM30uIOerr+eCueWkhOeahOWPluiIjeaYk+WHuumUmS4=
正确答案：
RA==
6Kej5p6Q77yaJiM4NzA1OzxpPjxzdWI+VTwvc3ViPjwvaT48aT5CPC9pPu+8nXs8aT54PC9pPnzvvI0x4omkPGk+eDwvaT7iiaQ0fe+8jDxpPkE8L2k+77ydezxpPng8L2k+fO+8jTLiiaQ8aT54PC9pPuKJpDN977yM5omA5LulPGk+QTwvaT7iiKkoJiM4NzA1OzxpPjxzdWI+VTwvc3ViPjwvaT48aT5CPC9pPinvvJ17PGk+eDwvaT5877yNMeKJpDxpPng8L2k+4omkM30=
