Question

What is the probability of the event that a number chosen from $1$ to $100$ is a prime number?

• A. $\frac{1}{4}$
• B. $\frac{6}{25}$
• C. $\frac{2}{4}$
• D. $\frac{13}{50}$

Answer 1

Answer: (A)

$\frac{1}{4}$

there are $25$ prime numbers between $1$ and $100$

$2,3,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97$

So,probability of the event that a number chosen from $1$ to $100$ is a prime number $=\frac{25}{100}=\frac{1}{4}$