Question

A number is chosen from 1 to 15. Find the probability that the number chosen is a prime number

• A. $\frac{8}{15}$
• B. $\frac{1}{5}$
• C. $\frac{2}{5}$
• D. $\frac{7}{15}$

Answer 1

Answer: (C)

$\frac{2}{5}$

Total no. of numbers$=15$

No. of prime numbers between $1$ to $15=6(2,3,5,7,11,13)$

Probability $=\frac{6}{15}=\frac{2}{5}$