13. How is Gross Domestic Product (GDP) calculated?
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1 point
By adding up the value of all goods and services produced in a country in a year
By dividing a country's population by the number of goods and services produced in a year
By calculating the total income earned by all people in a country in a year
By determining the total amount of money a country has in its treasury in a year.
1 answer
By adding up the value of all goods and services produced in a country in a year.