Venn – Diagram – Railway Reasoning part – 5

Total Questions: 50

11. The following diagram is a combination of four figures. A,B,C and D. Figure A represents the number of people who drink tea. Figure B represents the number of people who drink coffee. Figure C represents the number of people who drink milk. Figure D represents the number of people who drink cold drinks. [RRB NTPC 07/03/2021 (Morning)]

How many people do not drink coffee or milk?

Correct Answer: (c) 10
Solution:

People do not drink coffee or milk = Number of people who drink only tea or cold drinks.
And people who drink tea or cold drinks is represented by the figure A and figure D , 3 + 7 = 10

12. The following figure is a combination of 4 figures, A (rhombus), B (triangle), C (circle) and D (heart). Figure A represents number of people who like to read classical novels. Figure B represents people who like to read fictional novels. Figure C and D represents people who like to read biographies and fantasy novels, respectively. How many people like to read only biographies or only classical novels? [RRB NTPC 08/03/2021 (Morning)]

Correct Answer: (c) 12
Solution:From the above diagram we can see that persons who like only classic novels = 2 ; And the persons who like only biographies = 10 ;
So, there are (10 + 2) = 12 people who like to read only biographies or only classical novels.

13. There are 917 students in a college out of whom 535 are boys. In the diagram , the triangle represents 134 students studying in English medium and the circle represents 279 students in science stream. Girls are represented by the rectangle. Partial information regarding the break up of the students and their choice of medium and stream is included in the diagram. [RRB NTPC 08/03/2021 (Evening)]

Calculate how many boys are studying in science stream in the English medium.

Correct Answer: (c) 31
Solution:

According to the given condition The desrired answer will be
No. of boys excluding total girls is 17 , Remaining in the science stream is 48 Hence the boys in science with english medium will be 48 - 17 = 31

14. The following figure is a combination of 4 figures , A (rhombus), B(triangle), C(circle), and D(heart). Figure A represents the number of people who like to read book W. Figure B represents people who like to read book X. Figure C and D represent people who like to read book Y and Z respectively. [RRB NTPC 09/03/2021 (Evening)]

How many people like to read either book W or book X but not both?

Correct Answer: (b) 20
Solution:

(6 + 8 + 1) + ( 1 + 4 ) = 20 20 people like to read either book W or book X but not both.

15. The following figure is a combination of 4 figures, A,B,C and D. Figure A and B represent students who are enrolled in science club and debate club respectively. Figure C and D represent students who have joined drama club and sports club respectively. The numbers inside the figures represent the number of students in that particular region. How many students have joined more than two clubs? [RRB NTPC 11/03/2021 (Morning) ]

Correct Answer: (d) 3
Solution:

Students who joined more than two clubs are represented by the common region among at least 3 figures.
2 + 1 = 3

16. Select the Venn diagram that best represents the relationship between the given set of classes. [RRB NTPC 11/03/2021 (Morning)]

Females, Wife, Mothers

Correct Answer: (a)
Solution:

17. In the given diagram, the circle represents parliamentarians from North India, the square represents parliamentarians who have crossed the age of 70 and the triangle represents postgraduates among the parliamentarians. Which area represents postgraduates below 70 from the rest of India? [RRB NTPC 11/03/2021 (Evening)]

Correct Answer: (b) F
Solution:

Circle - parliamentarians from North india
square - 70 + age parliamentarians
Triangle - postgraduates
parliamentarians
So that , postgraduates below 70 from the rest of India = F

18. The following diagram is a combination of four figures A , B, C and .Figure A represents the number of people who drink green tea . Figure B represents the number of the people who drink cappuccino . Figure C represents the number of people who drink milk tea. Figure D represents the number of people who drink latte. [RRB NTPC 12/03/2021 (Evening)]

How many people drink latte or cappuccino but not milk tea ?

Correct Answer: (a) 23
Solution:

people who drink latte or cappuccino but not milk tea = ( 5 + 3 + 2 + 7 + 6 ) = 23

19. Select the Venn diagram that best represents the relationship between the given set of classes. [RRB NTPC 12/03/2021 (Evening)]

States, Village, Tehsils, Districts.

Correct Answer: (b)
Solution:

20. Study the given diagram and answer the question that follows. [RRB NTPC 13/03/2021 (Morning)]

The hexagon represents females.
The circle represents Writers.
The quadrilateral represents Bengali

How many female writers are Bengali?

Correct Answer: (d) 15
Solution:

The number of female writers who are Bengali is represented by the common region in Hexagon, circle and rectangle . The number representing the common region = 15