Question

From the natural number of singles of digit, the probability getting an even number is ...............

• A. $\frac{5}{9}$
• B. $\frac{5}{10}$
• C. $\frac{4}{9}$
• D. $\frac{1}{9}$

Answer 1

Answer: (C)

$\frac{4}{9}$

Here the total number of elements in sample space $S=\{1,2,3,4,5,6,7,8,9\}$, then $n\left(S\right)=9$
Let $E$ be the event of getting an even number, then the favourable outcomes of event $E=\{2,4,6,8\}⟹n\left(E\right)=4$
Then, $P\left(E\right)=\frac{n\left(E\right)}{n\left(S\right)}=\frac{4}{9}$

Hence, option C is correct.