Let $S = \{ 0,\,1,\,5,\,4,\,7\} $. Then the total number of subsets of $S$ is
$64$
$32$
$40$
$20$
Write the following as intervals :
$\{ x:x \in R,0\, \le \,x\, < \,7\} $
Write the set $A = \{ 1,4,9,16,25, \ldots .\} $ in set-builder form.
Make correct statements by filling in the symbols $\subset$ or $ \not\subset $ in the blank spaces:
$\{ 2,3,4\} \ldots \{ 1,2,3,4,5\} $
Which of the following are sets ? Justify your answer.
The collection of all natural numbers less than $100 .$
$A = \{ x:x \ne x\} $ represents