58
Q:

Select from four alternative diagrams, the one that best illustrates the relationship among the three classes  :  Pigeons, Birds, Dogs

A) 1 B) 2
C) 3 D) 4

Answer:   A) 1

Explanation:

All Pigeons are Birds. But,Dogs are entairly different.

Q:

In a town of 500 people, 285 read Hindu and 212 read Indian Express and 127 read Times of India, 20 read Hindu and Times of India and 29 read Hindu and Indian Express and 35 read Times of India and Indian express . 50 read no news paper . Then how many read only one paper ?

A) 123 B) 231
C) 312 D) 321
 
Answer & Explanation Answer: D) 321

Explanation:

No. of people who read Hindu = 285
No. of people who read TOI = 127
No. of people who read IE = 212
Now,
No. of people who read Hindu and TOI both is = 20
No. of people who read TOI and IE both is = 35
No. of people who read Hindu and IE both is = 29
Let No. of people who read Hindu , TOI and IE all is = x ;
So, only Hindu is = 285-20-29-x = 236-x ;
Only TOI is = 127-20-35-x = 72-x ;
Only IE is = 212-35-29-x = 148-x ;
Now, 236-x + 72-x + 148-x + 20 + 29 + 35 + x + 50 = 500 590 -2x = 500
So, x = 45 this is the value who read all the 3 dailies.
So, No. of people who read only one paper is = 236-45 + 72-45 + 148-45 = 191 + 27 + 103 = 321.

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5 12
Q:

Out of 120 students in aschool, 5% can play all the three games Cricket, Chess and Carroms. If so happens that the number of players who can play any and only two games is 30. The number of students who can play the Cricket alone is 40. What is the total number of those who can play Chess alone or Carroms alone ?

A) 45 B) 44
C) 46 D) 24
 
Answer & Explanation Answer: B) 44

Explanation:

k11483174138.jpg image

Given U=120

5% of 120 = 6

 Students who can play Chess alone or Carroms alone =  120 - (30+40+6)=44

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11 66
Q:

In a dinner party both fish and meat were served. Some took only fish and some only meat. There were some vegetarians who did not accept either. The rest accepted both fish and meat. Which of the following Venn-diagrams correctly reflects this situation?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: A) 1

Explanation:

The Given situation can be represented as under:

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41 1152
Q:

Select from the five alternative diagrams, the one that best illustrates the relationship among the three classes  :  Truck, Ship, Goods

A) 1 B) 3
C) 4 D) 5
 
Answer & Explanation Answer: B) 3

Explanation:

Truck and Ship are entirely different. But some Goods are carried by some Trucks and some Goods are carried by some Ships.

 

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62 893
Q:

Which of the following Venn- diagram correctly illustrates the relation ship among the classes  :  Tennis fans, Cricket players, Students

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: A) 1

Explanation:

Some Students can be Cricket players. Some Cricket players can be Tennis fans. Some Students can be Tennis fans. So, the given items are partly related to each other.

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84 3141