Question

A die is thrown once. What is the probability of getting either a 2 or a 1?

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

Answer 1

The correct option is D $\frac{1}{3}$

$P\left(E\right)=\text{Probability of getting 2}=\frac{\text{no of possible outcomes}}{\text{Total no of outcomes}}$
$=\frac{1}{6}$
$\Rightarrow \left(P\right(F)=\text{Probability of getting 1}=\frac{\text{no of possible outcomes}}{\text{Total no of outcomes}}$
$=\frac{1}{6}$
$\Rightarrow Probability\text{of getting 1 or 2}=\frac{1}{6}+\frac{1}{6}$
$=\frac{2}{6}=\frac{1}{3}$

So, option d is correct.