Discrete Mathematics MCQs with answers Page - 1

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Q. A _______ is an ordered collection of objects.

  • (A) relation
  • (B) function
  • (C) set
  • (D) proposition

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Q. Power set of empty set has exactly _____ subset.

  • (A) one
  • (B) two
  • (C) zero
  • (D) three

A

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Q. The set O of odd positive integers less than 10 can be expressed by ___________

  • (A) {1, 2, 3}
  • (B) {1, 3, 5, 7, 9}
  • (C) {1, 2, 5, 9}
  • (D) {1, 5, 7, 9, 11}

A

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Q. What is the cardinality of the set of odd positive integers less than 10?

  • (A) 10
  • (B) 5
  • (C) 3
  • (D) 20

A

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Q. Which of the following two sets are equal?

  • (A) a = {1, 2} and b = {1}
  • (B) a = {1, 2} and b = {1, 2, 3}
  • (C) a = {1, 2, 3} and b = {2, 1, 3}
  • (D) a = {1, 2, 4} and b = {1, 2, 3}

A

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Q. The set of positive integers is ________.

  • (A) infinite
  • (B) finite
  • (C) subset
  • (D) empty

A

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Q. What is the Cardinality of the Power set of the set {0, 1, 2}.

  • (A) 8
  • (B) 6
  • (C) 7
  • (D) 9

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Q. The members of the set S = {x x is the square of an integer and x < 100} is _________________.

  • (A) {0, 2, 4, 5, 9, 58, 49, 56, 99, 12}
  • (B) {0, 1, 4, 9, 16, 25, 36, 49, 64, 81}
  • (C) {1, 4, 9, 16, 25, 36, 64, 81, 85, 99}
  • (D) {0, 1, 4, 9, 16, 25, 36, 49, 64, 121}

A

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Q. The union of the sets {1, 2, 5} and {1, 2, 6} is the set _______________.

  • (A) {1, 2, 6, 1}
  • (B) {1, 2, 5, 6}
  • (C) {1, 2, 1, 2}
  • (D) {1, 5, 6, 3}

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Q. The intersection of the sets {1, 2, 5} and {1, 2, 6} is the set ___________.

  • (A) {1, 2}
  • (B) {5, 6}
  • (C) {2, 5}
  • (D) {1, 6}

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