Are the following pair of sets equal ? Give reasons.
$A = \{ 2,3\} ,\quad \,\,\,B = \{ x:x$ is solution of ${x^2} + 5x + 6 = 0\} $
Let $A=\{1,2,3,4,5,6\} .$ Insert the appropriate symbol $\in$ or $\notin$ in the blank spaces:
$10 \, .........\, A $
Write down all the subsets of the following sets
$\{ a\} $
Which of the following sets are finite or infinite.
$\{1,2,3 \ldots .\}$
Write the following sets in the set-builder form :
${\rm{\{ 5,25,125,625\} }}$