เซต

Question 1

​a\in\left\lbrace a,b,c,d\right\rbrace​ถูกหรือผิด​

Accepted Answer

o

Question 2

​\left\lbrace a\right\rbrace\in\left\lbrace a,\left\lbrace a\right\rbrace\right\rbrace​ ถูกหรือผิด​

Accepted Answer

o

Question 3

​\left\lbrace a\right\rbrace\in\left\lbrace a\right\rbrace​ถูกหรือผิด​

Accepted Answer

x

Question 4

​\left\lbrace c,b\right\rbrace\in\left\lbrace a,b,c,d\right\rbrace​ ถูกหรือผิด​

Accepted Answer

x

Question 5

​\left\lbrace a\right\rbrace\subset\left\lbrace a,\left\lbrace a\right\rbrace\right\rbrace​ ถูกหรือผิด​

Accepted Answer

o

Question 6

​a\subseteq\left\lbrace a,\left\lbrace a\right\rbrace\right\rbrace​ ถูกหรือผิด​

Accepted Answer

x

Question 7

​\left\lbrace c,b\right\rbrace\subseteq\left\lbrace a,b,c\right\rbrace​ ถูกหรือผิด​

Accepted Answer

o

Question 8

​\left\lbrace1,2,2,3\right\rbrace=\left\lbrace3,3,3,2,1\right\rbrace​ ถูกหรือผิด​

Accepted Answer

o

Question 9

​\left\lbrace x\vert x\in\char"0396 ,x^2+x=2\right\rbrace=\left\lbrace1,2\right\rbrace​ ถูกหรือผิด​

Accepted Answer

x

Question 10

ถ้า ​A\subseteq B​ และ ​d\in A​ แล้ว ​d\in B​ ถูกหรือผิด​

Accepted Answer

o

Question 11

ถ้า A เป็นเซต แล้ว ​\phi\in P(A)​  ถูกหรือผิด​

Accepted Answer

o

Question 12

ถ้า ​\left\vert A\right\vert=5​​  แล้ว  ​​\left\vert P(A)\right\vert=10​​ ถูกหรือผิด​

Accepted Answer

x