Set Theory Model Questions Set 1 Practice Questions Answers Test with Solutions & More Shortcuts

Question : 16

Consider the following for the next three (03) items : In a certain town of population size 1,00,000 three types of newspapers (I, II and III) are available. The percentages of the people in the town who read these papers are as follows :

What is the number of people who read only one newspaper?

a) 30, 000

b) 25, 000

c) 20, 000

d) 35, 000

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Question : 17

The set of integers is closed with respect to which one of the following?

a) Both addition and Multiplication

b) Multiplication only

c) Addition only

d) Division

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Question : 18

The set S = {x ε N : x + 3 = 3} is a

a) infinite set

b) singleton set

c) null set

d) None of the above

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Question : 19

If A = {(22n – 3n – 1)|n ∈ N} and B = {9(n – 1)|n ∈ N}, then which one of the following is correct?

a) A = B

b) B ⊂ A

c) A ⊂ B

d) Neither A is a subset of B nor B is a subset of A

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Question : 20

Let A denote the set of quadrilaterals having two diagonals equal and bisecting each other. Let B denote the set of quadrilaterals having diagonals bisecting each other at 90°. Then A ∩ B denotes

a) the set of squares

b) the set of rhombuses

c) the set of parallelograms

d) the set of rectangles

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