Write the following sets in roster form :
$B = \{ x:x$ is a natural number less than ${\rm{ }}6\} $
For an integer $n$ let $S_n=\{n+1, n+2, \ldots \ldots, n+18\}$. Which of the following is true for all $n \geq 10$ ?
Which of the following are sets ? Justify your answer.
The collection of all natural numbers less than $100 .$
Write the set $A = \{ 1,4,9,16,25, \ldots .\} $ in set-builder form.
Given the sets $A=\{1,3,5\}, B=\{2,4,6\}$ and $C=\{0,2,4,6,8\},$ which of the following may be considered as universal set $(s)$ for all the three sets $A$, $B$ and $C$
$\{ 1,2,3,4,5,6,7,8\} $