Suppose it is known that 80% of the people exposed to the corona virus will contract COVID-19. Out of a family of five exposed to the virus, what is the probability tha: a) No one will contract...

Suppose it is known that 80% of the people exposed to the corona virus will contract COVID-19. Out of a family of five exposed to the virus, what is the probability tha:

a) No one will contract COVID-19?

b) All will contract COVID-19?

c) At least two will get COVID-19?