Discrete Structure (DS) MCQs with answers Page - 16

Here, you will find a collection of MCQ questions on Discrete Structure (DS). Go through these questions to enhance your preparation for upcoming examinations and interviews.

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Q. (x ^ y)’ = x’ V y’

  • (A) FALSE
  • (B) TRUE
  • (C) Both a and b
  • (D) None

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Q. Test the validity of argument:“If it rains tomorrow, I will carry my umbrella, if its cloth is mended. It will rain tomorrow and the cloth will not be mended. Therefore I will not carry my umbrella”

  • (A) Invalid
  • (B) Valid
  • (C) Both a and b
  • (D) None

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Q. In a group of athletic teams in a certain institute, 21 are in the basket ball team, 26 in the hockey team, 29 in the foot ball team. If 14 play hockey and basketball, 12 play foot ball and basket ball, 15 play hockey and foot ball, 8 play all the three games. (i) How many players are there in all?

  • (A) 78
  • (B) 98
  • (C) 23
  • (D) 43

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Q. In above Q.123 (ii) How many play only foot ball?

  • (A) 10
  • (B) 8
  • (C) 9
  • (D) 4

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Q. (p ↔ q) ↔ r = p ↔ (q ↔ r)

  • (A) absurdity
  • (B) contadiction
  • (C) tautology
  • (D) none

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Q. Write the negation in good english sentence : "Jack did not eat fat, but he did eat broccoli."

  • (A) If Jack eat and broccoli then he did ate fat.
  • (B) If Jack did not eat broccoli then he did ate fat.
  • (C) If Jack did not eat broccoli or he did ate fat.
  • (D) If Jack did not eat broccoli then he did not ate fat.

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Q. Write the negation in good english sentence : The weather is bad and I will not go to work.

  • (A) The weather is not bad or I will go to work.
  • (B) The weather is good or I will go to work.
  • (C) The weather is not bad or I will not go to work.
  • (D) None

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Q. Write the negation in good english sentence : Mary lost her lamb or the wolf ate the lamb.

  • (A) Mary did loss her lamb and the wolf eat the lamb.
  • (B) Mary did loss her lamb and the wolf did not eat the lamb.
  • (C) Mary did not loss her lamb and the wolf did not eat the lamb.
  • (D) None

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Q. Write the negation in good english sentence : I will not win the game or I will not enter the contest.

  • (A) I will not win the game and I will enter the contest.
  • (B) I will win the game and I will enter the contest.
  • (C) I will win the game and I will not enter the contest.
  • (D) None

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Q. anya is older than Eric. Cliff is older than Tanya. Eric is older than Cliff. If the first two statements are true, the third statement is

  • (A) TRUE
  • (B) FALSE
  • (C) Both
  • (D) None

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