Write the following sets in roster form :

$A = \{ x:x$ is an integer and $ - 3 < x < 7\} $

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 $C$

$\{ 0,1,2,3,4,5,6\} $

Let $A=\{1,2,3,4,5,6\} .$ Insert the appropriate symbol $\in$ or $\notin$ in the blank spaces:

$ 8\, .......\, A $

Which of the following sets are finite or infinite.

$\{1,2,3 \ldots .\}$

What universal set $(s)$ would you propose for each of the following :

The set of right triangles

Examine whether the following statements are true or false :

$\{a\} \subset\{a, b, c\}$