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Venn Diagrams · Question 40 of 65

In the languages diagram, how many residents speak Tamil and at least one other of the three languages?

Question 40

HardOriginal question

In the languages diagram, how many residents speak Tamil and at least one other 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 40

Show the answer and explanation
CorrectNot quiteAnswer B

Correct answer: B

Explanation

  1. The residents must be inside Tamil and inside at least one more circle.

  2. Hindi and Tamil only 7, English and Tamil only 10, all three 6.

  3. Total =7+10+6=23= 7 + 10 + 6 = 23.

Worth noting

17 forgets the centre: a person who speaks all three still speaks Tamil and another language. 25 is 'Only Tamil', the opposite group.

Concept
Combining 'two only' regions with the centre
Typical time
120 s
Your time
—
The rule this testsReading a labelled diagram
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