Venn Diagram and Sets Challenge 06 скачать в хорошем качестве

Venn Diagram and Sets Challenge 06

Try this on your own... A survey of American tourists in Europe was conducted and the following information was gathered: 30 have been to Amsterdam 27 have been to Berlin 35 have been to Copenhagen 16 have been to Amsterdam and Berlin 17 have been to Amsterdam and Copenhagen 13 have been to Berlin and Copenhagen 44 have not been to any of the following three cities: Amsterdam, Berlin and Copenhagen 74 have been to at most one of the following three cities: Amsterdam, Berlin and Copenhagen a. How many tourists have been to Amsterdam, but not to Berlin or Copenhagen? b. How many tourists have been to exactly one of the three cities: Amsterdam, Berlin and Copenhagen? c. How many tourists have been to exactly two of the three cities: Amsterdam, Berlin and Copenhagen? Ans: a. 7, b. 30, c. 16