The set $A = \{ x:x \in R,\,{x^2} = 16$ and $2x = 6\} $ equals
$\phi $
$\{14, 3, 4\}$
$\{3\}$
$\{4\}$
List all the elements of the following sers :
$A = \{ x:x$ is an odd natural number $\} $
Which of the following are sets ? Justify your answer.
The collection of all the months of a year beginning with the letter $\mathrm{J}.$
Which of the following are sets ? Justify your answer.
A collection of most dangerous animals of the world.
In rule method the null set is represented by
What universal set $(s)$ would you propose for each of the following :
The set of right triangles