$A = \{ x:x \ne x\} $ represents
$\{0\}$
$\{\}$
$\{1\}$
$\{x\}$
Which of the following are examples of the null set
$\{ y:y$ is a point common to any two parallellines $\} $
Which of the following sets are finite or infinite.
The set of months of a year
Let $A=\{1,2,3,4,5,6\} .$ Insert the appropriate symbol $\in$ or $\notin$ in the blank spaces:
$ 8\, .......\, A $
Assume that $P(A)=P(B) .$ Show that $A=B$.
Examine whether the following statements are true or false :
$\{ a\} \in \{ a,b,c\} $