The set $A = \{ x:x \in R,\,{x^2} = 16$ and $2x = 6\} $ equals
Write the following sets in the set-builder form :
${\rm{\{ 2,4,8,16,32\} }}$
State whether each of the following set is finite or infinite :
The set of numbers which are multiple of $5$
Write the following sets in roster form :
$\mathrm{F} =$ The set of all letters in the word $\mathrm{BETTER}$
In each of the following, determine whether the statement is true or false. If it is true, prove it. If it is false, give an example.
If $x \in A$ and $A \in B,$ then $x \in B$