Question

The security guard of a hospital allows enter to 5 persons from a room for a checkup from a group of patients which has 10% Covid infected patients. The probability that there is at least one person Covid infected patients, is

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

Answer 1

Answer: (B)

$1-\frac{9^5}{10^5}$

Answer 2

The correct option is(B): $1-\frac{9^5}{10^5}$