Question

A die is thrown. Write the sample space. If $A$ is the event that the number is a perfect square, write the event $A$ using set notation.

Answer 1

A die is thrown
$\therefore$ Sample space$S=\{1,2,3,4,5,6\}$
$\therefore$ $n\left(S\right)=6$
Let $A$ be the event that the number is a perfect square
$\therefore$ $A=\{1,4\}$
$\therefore$ $n\left(A\right)=2$