Question

A symmetrical die is rolled. If an odd number comes up on it, then the probability of getting a prime number greater than $3$ on it is

• A. $\frac{1}{2}$
• B. $\frac{1}{3}$
• C. $\frac{2}{3}$
• D. $\frac{1}{4}$

Answer 1

Answer: (B)

$\frac{1}{3}$

Different cases of an odd number on the die are $1,3,5$.
Case where prime number greater than $3$ is on a die is when it rolls a $5$
Hence, the requ.ired probability $=\frac{1}{3}$