$A = \{ x:x \ne x\} $ represents
$\{0\}$
$\{\}$
$\{1\}$
$\{x\}$
(d) It is fundamental concept.
Which of the following are sets ? Justify your answer.
A collection of novels written by the writer Munshi Prem Chand.
The number of elements in the set $\{x \in R :(|x|-3)|x+4|=6\}$ is equal to
Are the following pair of sets equal ? Give reasons.
$A = \{ 2,3\} ,\quad \,\,\,B = \{ x:x$ is solution of ${x^2} + 5x + 6 = 0\} $
List all the elements of the following sers :
$D = \{ x:x$ is a letter in the word $"\mathrm{LOYAL}" $ $\} $
In each of the following, determine whether the statement is true or false. If it is true, prove it. If it is false, give an example.
If $A \not\subset B$ and $B \not\subset C,$ then $A \not\subset C$
