LIC AAO Venn Diagram Questions PDF
Download Important Venn Diagram questions for LIC AAO exam. Top 10 Venn Diagram questions with answers based on previous year asked questions.
Download LIC AAO Venn Diagram Questions PDF
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Instructions
The given Venn diagram shows the categories of people who are Rock Stars, Pop Stars and Hip Stars. Study the diagram carefully and answer the questions that follow:
Question 1: What is the total number of Rock Stars in the diagram?
a) Only C
b) C + B
c) C+ B + F
d) C+ B + E + F
e) C+B+E+F+ D
Question 2: Which area represents Rock Stars who are Pop Stars but not Hip Stars?
a) A
b) C
c) G
d) B
e) F
Question 3: What does area A represent?
a) Rock Stars who are Pop Stars but not Hip Stars
b) Pop Stars who are neither Rock Stars nor Hip Stars
c) Rock Stars who are Hip Stars but not Pop Stars
d) Hip Stars who are Pop Stars but not Rock Stars
e) Rock Stars who are Pop Stars and Hip Stars
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Question 4: What area represents the Hip Stars who are Rock Stars and Pop Stars?
a) A
b) B
c) C
d) D
e) E
Question 5: What does area F represent?
a) Rock Stars who are Pop Stars and Hip Stars
b) Pop Stars who are not Rock Stars and Hip Stars
c) Rock Stars who are Hip Stars but not Pop Stars
d) Hip Stars who are Pop Stars but not Rock Stars
e) Rock Stars who are Pop Stars but not Hip Stars
Question 6: At a certain school, each of the 160 students takes atleast one of the 3 classes. The 3 classes available are English, Hindi and Spanish. 54 students study English, 86 study Hindi and 61 study Spanish. If 8 students take all 3 classes, how many take exactly 2 classes?
a) 22
b) 25
c) 31
d) 27
e) 23
Question 7: In a locality consisting of 400 families, each family reads at least one newspaper. It is known that 200 families read ‘The Hindu’. 150 families read ‘Indian Express’ and 180 families read ‘Times of India’. If it is known that exactly 40 families read all three newspapers then how many families read exactly two newspapers?
a) 80
b) 50
c) 70
d) 90
e) 60
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Instructions
There are 450 students in a college. Each student has to choose one or more elective out of management, history and physics. Further following information is also known –
1) 75 students selected only management and physics.
2) 84 students selected only management and history.
3) 52 students selected only physics and history.
4) The number of students who selected only history is 137 less the number of students who selected only management.
5) In total 238 students selected management as an elective.
6) In total 240 students selected history as an elective.
Question 8: How many students selected both management and physics as elective?
a) 84
b) 107
c) 75
d) 89
e) 98
Question 9: How many students selected only management as an elective?
a) 56
b) 45
c) 58
d) 62
e) 51
Question 10: How many students selected the only history as an elective?
a) 78
b) 91
c) 81
d) 93
e) 80
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Answers & Solutions:
1) Answer (D)
The circle on the top right is entirely Rock Stars. C is only Rock Stars. F is rockstars who are also Hip Stars. B is Rockstars who are also Pop Stars. E is all the three. So, (d) is the answer..
2) Answer (D)
The area of intersection of the two circles at the top is the area of interest. So, the answer is B.
3) Answer (B)
Area A represents “only Popstars”. So, they are neither Rock Stars nor Hip Stars.
4) Answer (E)
The area that represents all the three groups is the area of intersection of the 3 circles ie E.
5) Answer (C)
F is the intersection of right circle and the bottom circle. So, it includes Rock Stars who are Hip Stars but not Pop Stars.
6) Answer (B)
Let us consider following diagram –
We know that
a+b+c+x+y+z+8 = 160
a+b+c+x+y+z = 152
Also, a+b+c+2*(x+y+z)+3*8 = 54+86+61
a+b+c+2*(x+y+z) = 177
Solving both equation we have, x+y+z = 177-152 = 25 students
So 25 students took exactly 2 subjects.
Hence, option B is the right answer.
7) Answer (B)
Let there be ‘a’ people who read exactly one newspaper, ‘b’ people who read exactly ‘2’ newspapers and ‘c’ people who read all three newspaper. So we have
a + b + c = 400
a + 2b + 3c = 150 + 180 + 200 = 530
Subtracting both the equations we get
b + 2c = 130
We have been given that c = 40
Hence, b = 130 – 80 = 50
Thus, 50 people read exactly two newspapers.
8) Answer (E)
Let ‘x’ be the number of students who took all the three electives and ‘y’ be the number of students who took only management as an elective.
We get following venn diagram –
Considering students who took management as an elective we have,
y + x + 84 + 75 = 238
x + y = 79
Considering students who took history as an elective we have,
137 – y + x + 84 + 52 = 240
y – x = 33
Adding both the equation we get,
2y = 112
y = 56
So, x = 23
So, number of students who took all the three electives = 23
Number of students who took only management = 56
Number of students who took only history = 137 – 56 = 81
So, the number of students who took only physics = 450 – 240 – 56 – 75 = 79
Thus, we get following venn diagram –
Number of students who selected both management and physics as elective = 75 + 23 = 98
Hence, option E is the correct choice.
9) Answer (A)
Let ‘x’ be the number of students who took all the three electives and ‘y’ be the number of students who took only management as an elective.
We get following venn diagram –
Considering students who took management as an elective we have,
y + x + 84 + 75 = 238
x + y = 79
Considering students who took history as an elective we have,
137 – y + x + 84 + 52 = 240
y – x = 33
Adding both the equation we get,
2y = 112
y = 56
So, x = 23
So, number of students who took all the three electives = 23
Number of students who took only management = 56
Number of students who took only history = 137 – 56 = 81
So, the number of students who took only physics = 450 – 240 – 56 – 75 = 79
Thus, we get following venn diagram –
Hence, option A is the correct choice.
10) Answer (C)
Let ‘x’ be the number of students who took all the three electives and ‘y’ be the number of students who took only management as an elective.
We get following venn diagram –
Considering students who took management as an elective we have,
y + x + 84 + 75 = 238
x + y = 79
Considering students who took history as an elective we have,
137 – y + x + 84 + 52 = 240
y – x = 33
Adding both the equation we get,
2y = 112
y = 56
So, x = 23
So, number of students who took all the three electives = 23
Number of students who took only management = 56
Number of students who took only history = 137 – 56 = 81
So, the number of students who took only physics = 450 – 240 – 56 – 75 = 79
Thus, we get following venn diagram –
Hence, option C is the correct choice.
