Discrete Structure (DS) MCQs | Page - 3

Dear candidates you will find MCQ questions of Discrete Structure (DS) here. Learn these questions and prepare yourself for coming examinations and interviews. You can check the right answer of any question by clicking on any option or by clicking view answer button.

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Mr. Dubey • 100.69K Points
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Q. ……… is an unordered collection of elements where an element can occur as a member more than once

  • (A) Multiset
  • (B) ordered set
  • (C) set
  • (D) None
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Mr. Dubey • 100.69K Points
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Q. In a room containing 28 females, there are 18 females who speak English, 15 females speak french and 22 speak german. 9 females speak both english and french, 11 females speak both french and german where as 13 speak both german and english. How many females speak all 3 languages?

  • (A) 9
  • (B) 8
  • (C) 7
  • (D) 6
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Mr. Dubey • 100.69K Points
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Q. If U = {1, 2, 3, . . . 10 } and S = { 4, 5, 6, 7, 8 }, then S ' =

  • (A) { 9, 10 }
  • (B) {1, 2, 3 }
  • (C) {1, 2, 3 9 }
  • (D) {1, 2, 3 9 10 }
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Mr. Dubey • 100.69K Points
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Q. If U = {1, 2, 3, . . . 20 } and S = set of prime numbers , then S =

  • (A) { 3, 5, 7, 11, 13, 17 }
  • (B) { 2, 3, 5, 7, 11, 13, 17, 19 }
  • (C) {1, 3, 5, 7, 9, 11, 13, 15, 17, 19 }
  • (D) {1, 2, 3, 5, 7, 11, 13, 17 }
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Mr. Dubey • 100.69K Points
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Q. Consider the statement,“If n is divisible by 30 then n is divisible by 2 and by 3 and by 5.”Which of the following statements is equivalent to this statement?

  • (A) If n is not divisible by 30 then n is divisible by 2 or divisible by 3 or divisible by 5
  • (B) If n is not divisible by 30 then n is not divisible by 2 or not divisible by 3 or not divisible by 5
  • (C) If n is divisible by 2 and divisible by 3 and divisible by 5 then n is divisible by 30.
  • (D) If n is not divisible by 2 or not divisible by 3 or not divisible by 5 then n is not divisible by 30
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Mr. Dubey • 100.69K Points
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Q. In a class of 80 students , 50 students know English, 55 know french and 46 know german language. 37 students know english and french, 28 students know french and german, 7 students know none of the languages. Find out how many students know all the three languages?

  • (A) 73
  • (B) 72
  • (C) 50
  • (D) 54
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Mr. Dubey • 100.69K Points
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Q. A preposition is a statement that is either ture or false

  • (A) TRUE
  • (B) FALSE
  • (C) none
  • (D) both a and b
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Mr. Dubey • 100.69K Points
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Q. A prepostition that is true under all circumstances is referred to as a ….

  • (A) Tautology
  • (B) Contradiction
  • (C) Negation
  • (D) Sentence
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