EduFarming
Your list · 0हिं

Type at least two letters. Press Esc to close.

↑↓ navigate↵ openTAB cycle filter

Venn Diagrams · Question 31 of 65

According to the survey diagram of office drinks, how many employees drink at least one of the three drinks?

Question 31

MediumOriginal question

According to the survey diagram of office drinks, how many employees drink at least one of the three drinks?

Venn diagram of three overlapping circles labelled Tea, Coffee and Juice inside a box labelled Employees surveyed. Only Tea: 24. Only Coffee: 15. Only Juice: 9. Tea and Coffee only: 8. Tea and Juice only: 6. Coffee and Juice only: 4. All three: 3. Outside all three: 5.
Options for question 31

Show the answer and explanation
CorrectNot quiteAnswer C

Correct answer: C

Explanation

  1. At least one means every region inside the circles.

  2. 24+15+9+8+6+4+3=6924 + 15 + 9 + 8 + 6 + 4 + 3 = 69.

Worth noting

74 also counts the 5 employees outside the circles, who drink none of the three. 48 counts only the 'only' regions.

Concept
At least one equals the union
Typical time
70 s
Your time
—
The rule this testsReading a labelled diagram
Practise this chapter →

Ten questions from Venn Diagrams, at your own pace.

Practise this chapter →

Ten questions from Venn Diagrams, at your own pace.

Practise this chapterAll 65 questions in Venn DiagramsRevise the notes for Venn Diagrams