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What is District population 10 lac, with under-I o are 30%, prevalence of blindness is 0.8/1000 of under-16 population. Calculate the no. of blind under-16 and explain in detail?
Ans. a. 240 Prevalence = 0.8/1000 District Population = 10 Lakhs Under 16 = 30% of district population Hence, total population of under 16 = 3 Lakhs Hence, No. of blind under 16 = 0.8 x 3,00,000/1,000 = 240