Where k=R=86

Q.1) (CLO1-PLO1) 10 A vaccine under research for COVID-19 was found to provide immunity to 80% of the people under test. The vaccine is now given to 20 employees of an office in emergency. Compute the probability that exactly k employees will develop immunity to COVID-19, where k = R mod 20. For example, if R = 17, then k = 17. However, if R = 156, then k = 16