Write down all the subsets of the following sets
$\{ a,b\} $
The subsets $\{a, b\}$ are $\varnothing,\{a\},\{b\},$ and $\{a, b\}$
Write the following as intervals :
$\{ x:x \in R,0\, \le \,x\, < \,7\} $
Show that the set of letters needed to spell $"\mathrm{CATARACT}"$ and the set of letters needed to spell $"\mathrm{TRACT}"$ are equal.
Write the following sets in roster form :
$A = \{ x:x$ is an integer and $ – 3 < x < 7\} $
State which of the following sets are finite or infinite :
$\{ x:x \in N$ and $(x – 1)(x – 2) = 0\} $
$\mathrm{F} =$ The set of all letters in the word $\mathrm{BETTER}$
