Venn – Diagram – Railway Reasoning part – 1

Total Questions: 50

11. In the given figure, what does the shaded portion depict? [NTPC CBT - I 23/01/2021 (Morning)]

Correct Answer: (a) A group of female teachers who neither play badminton nor tennis .
Solution:

From the given diagram we can see that the shaded portion is the common area of females and teachers only.
So shaded portion depict A group of female teachers who neither play badminton nor tennis

12. The given Venn diagram shows the number of students who got distinction in three subjects among 350 students. [NTPC CBT - I 29/01/2021 (Evening)]

Find the percentage of students who got distinction in only two subjects.

Correct Answer: (c) 20%
Solution:

Total students who got distinction in any two subjects = 25 + 10 + 35 = 70

13. R, S and T represent people who like roses, sunflowers and tulips, respectively. The number of people in R=10, S=12 and T=16. Three people are such that they like roses, sunflowers and tulips. Two of them like roses and sunflowers. Three people like roses and tulips and four people like sunflowers and tulips. How many people only like roses? [NTPC CBT - I 31/01/2021 (Morning)]

Correct Answer: (a) 2
Solution:

The people who like only roses
= 10 - (3 + 3 + 2) = 2

14. If 35 out of 40 people are Tamil speakers, then which of the following figures best depicts Tamil speakers? [RRB NTPC 09/02/2021 (Morning)]

Correct Answer: (d)
Solution:

15. Which of the following is correct about the given diagram ? [NTPC CBT - I 16/02/2021 (Morning)]

Correct Answer: (b) All A are C
Solution:

From the given diagram we can observe that A lies inside the C, so all A will be C

16. In a certain language institute, English and Spanish language courses were available. Some students enrolled for only English and some students for only Spanish. A group of students of this institute were not interested in either so they didn’t enroll. The rest enrolled for both English and Spanish.Which one of the following logic diagrams correctly reflects the above situation. [NTPC CBT - I 22/02/2021 (Morning)]

Correct Answer: (c)
Solution:

17. The following figure is a combination of 4 CIRCLES, A,B,C and D. The numbers in the figure corresponds to the number of people in that category. Circle A represents people who like Science while circle B represents the ones who like History. Circle C and D represent people who like English and Sanskrit, respectively. According to the given figure, find total number of people who like ONLY Science AND ONLY English and History together? [NTPC CBT - I 04/03/2021 (Evening)]

Correct Answer: (d) 16
Solution:

Total number of people who like only Science(10) and only English and History together(6) = 16

18. Which of the following Venn diagrams represents the given statements ? [NTPC CBT - I 23/07/2021 (Morning)]

Some scientists are professors.
All scientists are employees.
All professors are employees.

Correct Answer: (c)
Solution:

19. In a class of 46 students, 18 play carom; 17 play chess, including 6 who play carom; 16 play cards, including 4 who play chess, but not carom; and 5 play only tennis. Which of the following figures represents these facts? [NTPC CBT - I 26/07/2021 (Morning)]

Correct Answer: (a)
Solution:

From the given information we can draw the following venn diagram :
So, the suitable venn diagram will be option (a) ;

20. In the given figure, the circle represents male, triangle represents Engineers, and rectangle represents Doctors. Which region represents the persons who are Engineers and Doctors but not male? [RRB JE 02/06/2019 (Morning)]

Correct Answer: (d) 2
Solution:

From the above diagram it is clearly seen that region 2 represents the persons who are Engineers and Doctors but not male.