Write the following intervals in set-builder form :

$\left( {6,12} \right]$

Make correct statements by filling in the symbols $\subset$ or $ \not\subset $ in the blank spaces:

$\{ x:x$ is an even natural mumber $\}  \ldots \{ x:x$ is an integer $\} $

Consider the sets

$\phi, A=\{1,3\}, B=\{1,5,9\}, C=\{1,3,5,7,9\}$

Insert the symbol $\subset$ or $ \not\subset $ between each of the following pair of sets:

$\phi \,....\,B$

State which of the following sets are finite or infinite :

$\{ x:x \in N$ and $x$ is prime $\} $

The set $A = \{ x:x \in R,\,{x^2} = 16$ and $2x = 6\} $ equals

Which of the following are examples of the null set

$\{ x:x$ is a natural numbers, $x\, < \,5$ and $x\, > \,7\} $