Population of a country was 1 million at the beginning of Year 2015. The numbers grow by x during the year. A tornedo hits this country in the next year and many of population die. The population decreases by y during 2016 and at the beginning of 2017 the country is now left with 1 million of population. Which of the following is true?

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Population of a country was 1 million at the beginning of Year 2015. The numbers grow by x during the year. A tornedo hits this country in the next year and many of population die. The population decreases by y during 2016 and at the beginning of 2017 the country is now left with 1 million of population. Which of the following is true?






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