The number of elements in the set $\{x \in R :(|x|-3)|x+4|=6\}$ is equal to
$3$
$2$
$4$
$1$
Write the solution set of the equation ${x^2} + x - 2 = 0$ in roster form.
State which of the following sets are finite or infinite :
$\{ x:x \in N$ and $(x - 1)(x - 2) = 0\} $
Write the following sets in roster form :
$\mathrm{F} =$ The set of all letters in the word $\mathrm{BETTER}$
Write down all the subsets of the following sets
$\{ a\} $
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 $\} $