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The Venn diagram shows the number of students in a class who like reading(R), da...


Question

The Venn diagram shows the number of students in a class who like reading(R), dancing(D) and swimming(S). How many students like dancing and swimming?

Options

A) 7

B) 9

C) 11

D) 13

The correct answer is A.

Explanation:

student that like swimming = x + 2

where 2 is the number of students who like reading, dancing and swimming. To find x from the venn diagram of swimming

6 +3 + 2 + x = 16

11 + x = 16

x = 16 - 11 = 5

no. of students that like dancing and swimming

x + 2 = 5 + 2 = 7


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Dicussion (1)

  • student that like swimming = x + 2

    where 2 is the number of students who like reading, dancing and swimming. To find x from the venn diagram of swimming

    6 +3 + 2 + x = 16

    11 + x = 16

    x = 16 - 11 = 5

    no. of students that like dancing and swimming

    x + 2 = 5 + 2 = 7

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