Discrete Mathematics Questions and Answers – Types of Set

This set of Discrete Mathematics Multiple Choice Questions & Answers (MCQs) focuses on “Types of Set”.

1. {x: x is an integer neither positive nor negative} is ________
a) Empty set
b) Non-empty set
c) Finite set
d) Non- empty and Finite set
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2. {x: x is a real number between 1 and 2} is an ________
a) Infinite set
b) Finite set
c) Empty set
d) None of the mentioned
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3. Write set {1, 5, 15, 25,…} in set-builder form.
a) {x: either x=1 or x=5n, where n is a real number}
b) {x: either x=1 or x=5n, where n is a integer}
c) {x: either x=1 or x=5n, where n is an odd natural number}
d) {x: x=5n, where n is a natural number}
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4. Express {x: x= n/ (n+1), n is a natural number less than 7} in roster form.
a) {¹⁄₂, ²⁄₃, ⁴⁄₅, ⁶⁄₇}
b) {¹⁄₂, ²⁄₃, ³⁄₄, ⁴⁄₅, ⁵⁄₆, ⁶⁄₇, ⁷⁄₈}
c) {¹⁄₂, ²⁄₃, ³⁄₄, ⁴⁄₅, ⁵⁄₆, ⁶⁄₇}
d) Infinite set
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5. Number of power set of {a, b}, where a and b are distinct elements.
a) 3
b) 4
c) 2
d) 5
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6. Which of the following is subset of set {1, 2, 3, 4}?
a) {1, 2}
b) {1, 2, 3}
c) {1}
d) All of the mentioned
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7. A = {∅,{∅},2,{2,∅},3}, which of the following is true?
a) {{∅,{∅}} ∈ A
b) {2} ∈ A
c) ∅ ⊂ A
d) 3 ⊂ A
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8. Subset of the set A= { } is?
a) A
b) {}
c) ∅
d) All of the mentioned
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9. {x: x ∈ N and x is prime} then it is ________
a) Infinite set
b) Finite set
c) Empty set
d) Not a set
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10. Convert set {x: x is a positive prime number which divides 72} in roster form.
a) {2, 3, 5}
b) {2, 3, 6}
c) {2, 3}
d) {∅}
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Sanfoundry Global Education & Learning Series – Discrete Mathematics.

To practice all areas of Discrete Mathematics, here is complete set of 1000+ Multiple Choice Questions and Answers.

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