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Venn Diagrams · Question 33 of 65

According to the languages diagram, how many surveyed residents speak exactly one of the three languages?

Question 33

MediumOriginal question

According to the languages diagram, how many surveyed residents speak exactly one of the three languages?

Venn diagram of three overlapping circles labelled Hindi, English and Tamil inside a box labelled Residents surveyed. Only Hindi: 30. Only English: 12. Only Tamil: 25. Hindi and English only: 18. Hindi and Tamil only: 7. English and Tamil only: 10. All three: 6.
Options for question 33

Show the answer and explanation
CorrectNot quiteAnswer D

Correct answer: D

Explanation

  1. Exactly one: the three 'only' regions.

  2. 30+12+25=6730 + 12 + 25 = 67.

Worth noting

41 is the residents who speak more than one language (35 speak exactly two and 6 speak all three), the opposite group.

Concept
Exactly one equals the sum of 'only' regions
Typical time
70 s
Your time
—
The rule this testsReading a labelled diagram
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