Question

There are $30$ tickets numbered from $1$ to $30$ in a box. A ticket is drawn at random. If $A$ is the event that the number on the ticket is a prime number less than $15$, write the sample space $S$, $n\left(S\right)$ the event $A$ and $n\left(A\right)$.

Answer 1

Given, there are $30$ tickets in a box. A ticket is drawn at random.

Let $S$ be the sample space,
$S=\{1,2,3,4,.........,30\}$
$n\left(S\right)=30$
By considering the given defination of event $A,$
$A=\{2,3,5,7,11,13\}$
$n\left(A\right)=6$