Question

A set $X$ is the set of vowels in the word $"CRYPT",$ then

• A. $X=\left\{\right\}$
• B. $X=\{A,E,I,O,U\}$
• C. $X=\left\{\varphi \right\}$

Answer 1

The correct option is A $X=\left\{\right\}$

Given the set $X$ as vowels of the word $"CRYPT".$
$\Rightarrow X$ is an empty or a null set, since there are no vowels in the word.
$\Rightarrow X=\left\{\right\}\text{or}X=\varphi .$