State which of the following sets are finite or infinite :
$\{ x:x \in N$ and $x$ is prime $\} $
Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$\{ \{ 3,4\} \} \subset A$
List all the elements of the following sers :
$A = \{ x:x$ is an odd natural number $\} $
Write the following as intervals :
$\{ x:x \in R,0\, \le \,x\, < \,7\} $
Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$\{\varnothing\} \subset A$