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20 people visit three Scandinavian countries during vacation, namely Denmark, Sweden, and Norway. Each person visits at least one place and 2 people visit all three places. 1, 2, 3 is the number of persons who visit both Sweden, Norway but not Denmark; Norway, Denmark but not Sweden; and Sweden, Denmark but not Norway respectively. 4 people visit only Sweden and 3 people visit only Denmark. So, what is the total number of persons who visit Norway?

20 people visit three Scandinavian countries during vacation, namely Denmark, Sweden, and Norway. Each person visits at least one place and 2 people visit all three places. 1, 2, 3 is the number of persons who visit both Sweden, Norway but not Denmark; Norway, Denmark but not Sweden; and Sweden, Denmark but not Norway respectively. 4 people visit only Sweden and 3 people visit only Denmark. So, what is the total number of persons who visit Norway? Correct Answer 10

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People who visit both Sweden and Norway but not Denmark = 1

People who visit both Norway and Denmark but not Sweden = 2

People who visit both Sweden and Denmark but not Norway = 3

All three places are visited by 2 people only

Number of people going to Sweden only = 4

Number of people going to Denmark only = 3

On adding the above figures, we get = 15

Total number of persons = 20

So, 20 – 15 = 5, this is the people visiting only Norway.

Total number of persons visiting Norway = 5 + 1 + 2 + 2 =10

Hence, 10 is the correct answer.

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