State which of the following sets are finite or infinite :

$\{ x:x \in N$ and $2x - 1 = 0\} $

$A = \{ x:x \ne x\} $ represents

Which of the following are examples of the null set

Set of even prime numbers

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

$\{ x:x$ is an equilateral triangle in a plane $\}  \ldots \{ x:x$ is a triangle in the same plane $\} $

Are the following pair of sets equal ? Give reasons.

$A = \{ 2,3\} ,\quad \,\,\,B = \{ x:x$ is solution of ${x^2} + 5x + 6 = 0\} $

List all the elements of the following sers :

$A = \{ x:x$ is an odd natural number $\} $