Let $A=\{1,2,\{3,4\}, 5\} .$ Which of the following statements are incorrect and why ?
$\varnothing \in A$
Given the sets $A=\{1,3,5\}, B=\{2,4,6\}$ and $C=\{0,2,4,6,8\},$ which of the following may be considered as universal set $(s)$ for all the three sets $A$, $B$ and $C$
$\{ 0,1,2,3,4,5,6\} $
The set $A = \{ x:x \in R,\,{x^2} = 16$ and $2x = 6\} $ equals
Which set is the subset of all given sets
Write the following as intervals :
$\{ x:x \in R, - 12\, < \,x\, < \, - 10\} $