Question

An unbiased cubical die whose faces are numbered $1$ to $6$ is rolled once. Find the probability of getting a square number on the top face.

Answer 1

Solution:

S$=\{1,2,3,4,5,6\}$

$n\left(S\right)=6$

Let $A=$ square number $=\{1,4\}$

$n\left(A\right)=2$

$p\left(A\right)=\frac{n\left(A\right)}{n\left(S\right)}=\frac{2}{6}=\frac{1}{3}$