Write the following as intervals :
$\{ x:x \in R, - 4\, < \,x\, \le \,6\} $
$\{ x:x \in R, – 4\, < \,x\, \le \,6\} = ( – 4,6]$
The number of proper subsets of the set $\{1, 2, 3\}$ is
Let $A=\{1,2,3,4,5,6\} .$ Insert the appropriate symbol $\in$ or $\notin$ in the blank spaces:
$ 4\, ……… \, A $
Which of the following are sets ? Justify your answer.
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$\{ x:x \in R, – 12\, < \,x\, < \, – 10\} $
Let $S=\{1,2,3,4\}$. The total number of unordered pairs of disjoint subsets of $S$ is equal to
