alleryIn a group of 60 people, 35 like tea, 30 like coffee and 10 like neither. How many like both?
- 25
- 10
- 15
- 20
Show answer and solution
Correct answer: C. 15
50 people like at least one drink, so both = 35 + 30 - 50 = 15.
RRB NTPC Venn Diagrams — practice questions
Explore 59 free Venn Diagrams questions in RRB NTPC Reasoning. Open each question or exercise to read its content, reference answers and available explanation.
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Showing questions 1–30 of 59.
In a group of 60 people, 35 like tea, 30 like coffee and 10 like neither. How many like both?Read the answer and worked solution →Among 100 people, 65 speak Hindi, 55 speak English and 20 speak both. How many speak only Hindi?Read the answer and worked solution →In a class of 50, 30 study maths, 25 study science and 15 study both. How many study neither?Read the answer and worked solution →If set A has 18 members, set B has 12 and A and B share 5, how many members are in the union?Read the answer and worked solution →The union of two sets has 30 members. One set has 20 and the other 18. How many do they share?Read the answer and worked solution →In a group of 70, 40 read magazine P, 30 read magazine Q and 10 read both. How many read exactly one?Read the answer and worked solution →Three separate groups have 20, 15 and 10 members with no common members. What is the total in all three?Read the answer and worked solution →In a village of 200 families, 120 own cows and 90 own goats; 30 own both. How many own neither?Read the answer and worked solution →Of 90 students, 50 passed English and 60 passed Hindi; all passed at least one. How many passed both?Read the answer and worked solution →In a survey of 120, 70 liked apples and 50 liked mangoes; 20 liked both. How many liked only apples?Read the answer and worked solution →Of 75 employees, 40 know Java, 35 know Python and 10 know neither. How many know both?Read the answer and worked solution →Which symbol denotes the intersection of sets A and B?Read the answer and worked solution →How many zones must overlapping circles for three sets contain, including the outside?Read the answer and worked solution →In the creature example, which of these lies in the two-legs circle but outside the flying circle?Read the answer and worked solution →Which set of three classes is best shown by three circles, each inside the next larger one?Read the answer and worked solution →Which classes are best shown by two separate circles inside one larger circle?Read the answer and worked solution →Which classes are best shown by three mutually intersecting circles?Read the answer and worked solution →What is the set of all humans, in relation to the set of all mammals?Read the answer and worked solution →A set that has no elements at all is called what?Read the answer and worked solution →The relation of one set lying wholly inside another is called what?Read the answer and worked solution →A family of subsets whose union is the whole set with no overlaps is called what?Read the answer and worked solution →In traditional logic, which statement type is 'All metals are elements'?Read the answer and worked solution →Venn pictures normally use which closed shape for sets?Read the answer and worked solution →Overlapping circles for sets A and B hold 12 only in A, 8 in both and 5 only in B. What is the union?Read the answer and worked solution →Among 100 people, 30 are only in set P, 25 only in set Q and 20 in both. How many are in neither?Read the answer and worked solution →A library has 90 members. 55 borrow fiction, 48 borrow science and 13 borrow neither. How many borrow both?Read the answer and worked solution →A cafe had 150 visitors. 25 took both coffee and tea, 40 took only tea and 60 took only coffee. How many took neither?Read the answer and worked solution →Of 72 students, 40 sing, 32 dance and 12 do both. How many take part in at least one of the two?Read the answer and worked solution →In a town, 60 percent read paper X, 40 percent read paper Y and 20 percent read both. What percent read neither?Read the answer and worked solution →Every person in a hall likes cricket or tennis. 70 percent like cricket and 55 percent like tennis. What percent like both?Read the answer and worked solution →
Worked practice questions
Among 100 people, 65 speak Hindi, 55 speak English and 20 speak both. How many speak only Hindi?
- 35
- 50
- 45
- 40
Show answer and solution
Correct answer: C. 45
Only Hindi speakers are those in the Hindi circle outside the overlap: 65 - 20 = 45.
In a class of 50, 30 study maths, 25 study science and 15 study both. How many study neither?
- 5
- 12
- 10
- 8
Show answer and solution
Correct answer: C. 10
Union = 30 + 25 - 15 = 40 students, so 50 - 40 = 10 study neither.
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