(Answered) 1 the records of 100 students show the following courses

Economics

1) The records of 100 students show the following courses taken:

53 students took History

41 students took Marketing

48 students took Writing

18 students took History and Marketing

21 students took Marketing and Writing

7 students took all 3 courses

9 students took none of these courses

Answer the following questions. Show how you obtained your solution.

a) How many students took Marketing and Writing, but not History?

b) How many students took only History?

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Macroeconomics, Economics

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