Ans, is 'C' 10 per 1000 Mention of cholera is just to confuse students.. o In this question : Mid year population = 5000 Total death = 50 Patients of cholera =50 Death due to cholera = 10 Here is a similar example- Follow these steps, substitute the numericals in the question and arrive at the answer. o The simplest measure of mortality is crude death rate o Other mortality rates which can be calculated in this question are - 1) Specific death rate due to cholera 2) Proportional mortality rate 3) Case fatality rate-