Question

In throwing a fair dice, the probability of the event ''a number $\le 3$ turns up'' is

• A. $\frac{5}{6}$
• B. $\frac{1}{3}$
• C. $\frac{2}{3}$
• D. $\frac{1}{2}$

Answer 1

The correct option is D $\frac{1}{2}$

The sample space of the experiment is
$S=\{1,2,3,4,5,6\}$
Let event $A$ be ''a number $\le 3$ turns up''
$A=\{1,2,3\}$
$P\left(A\right)=\frac{n\left(A\right)}{n\left(S\right)}=\frac{3}{6}=\frac{1}{2}$