If prevalence of diabetes is 10%, the probability that three people selected at random from the population will have diabetes is:

A. 0.01

B. 0.03

C. 0.001

D. 0.003

Correct answer : C. 0.001

Prevalence of diabetes = 0.1

Probability that any one person selected from the population will have diabetes = 0.1

Probability that 3 people selected from the population will all have diabetes = 0.1*0.1*0.1 = 0.001