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If an area has five lakh births, three lakh deaths and net migration of one lakh, what will be the total growth?

Answer and explanation

Correct answer: Three lakh

Direct answer: A, three lakh. Population growth has two parts: natural increase and net migration. First calculate natural increase by subtracting deaths from births: five lakh births minus three lakh deaths equals two lakh. Then include net migration, because one lakh more people entered than left. Therefore, total growth = natural increase + net migration = two lakh + one lakh = three lakh. A is correct because it includes both components. B is only the natural increase and ignores migration. C is only the net migration and ignores births and deaths. D is obtained by adding all three figures without treating deaths as a reduction; deaths must be subtracted, not added. Memory cue: births minus deaths, then add net migration.

Related tags

BirthsDeathsNet MigrationPopulation GrowthPopulationGeographyClass 9 Mcq

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