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MBA Logical Reasoning Questions & Answers – Binary Logic Set-I

Sep 29, 2016 15:50 IST

    Practice questions on Binary Logic from the logical reasoning section to enhance your rational thinking skills at jagranjosh.com to ace various entrances such as CAT, CMAT, MAT, XAT, IIFT, SNAP etc.

    Directions (1 -2): Read the question below very carefully and choose the correct answer for the questions that follow:

    On an island ‘Tristan da Cunha’ the inhabitants always answer any question with two sentences – one of which is always true and the other always false.

    The Head of the island discovers illegal activities, in order to determine the identity of the culprits and also to know more about the next heist on the basis of a plane. You and what it looks like. This is what they have to say:

    S: It arrives at 9:00 p.m. The colour of the plane is only red.
    R: It arrives at 9:00 p.m. The colour of the plane is only red.
    B: I know at what time the ship arrives. R is lying about the time of arrival.

    1. At what time does the plane arrive?

    a) 4 p.m.
    b) 9:00 p.m.
    c) Can’t say
    d) Won’t arrive

    2. What is the colour of the plane?

    a) Can’t say
    b) Red
    c) Blue
    d) Both red and blue

    Directions (3 -7): Read the question below very carefully and choose the correct answer for the questions that follow:

    There are two types of inhabitants at Hawaii Islands – X type and Y type. The X type of inhabitants always speaks the truth and the Y type of inhabitants always lie.

    3. John says, “I always lie.” Which type of an inhabitant is he?

    a) X
    b) Y
    c) Either X or Y
    d) The given statement infeasible.

    4. David says, "According to John. I always speak the truth." Which of the following is a correct conclusion?

    a) David has to be of type X
    b) David has to be of type Y
    c) John has to be of type X.
    d) John has to be of type Y.

    5. Mike says. "Albert and I are of the same type." Which of the following is a correct conclusion?

    a) Mike and Albert are necessarily of the same type.
    b) Albert has to be of type X.
    c) Mike and Albert cannot be of the same type.
    d) The given statement is infeasible.

    6. Rolly says "Soni and I are of different types." Which of the following is a correct conclusion?

    a) Rolly and Soni are of Type B and Type A respectively.
    b) Rolly and Soni cannot be of the same type.
    c) Soni has to be of Type B.
    d) Shyam has to be of Type B.

    7. Mike says, "At least one person among Albert and I always lies." What types are Mike and Albert-respectively?

    a) Y, X
    b) Y, Y
    c) X, Y
    d) It is not possible to deduce.

    Directions (8 -10): Refer to the passage below and answer questions given below it.

    The inhabitants of the Island of Middle Andaman Island have very bright and interesting lives. Just as we earthlings have continuity in our routine lives, the inhabitants of the Island of Middle Andaman Island have continuity in both their waking lives, as well as their dreams. As a result, the inhabitants of the Island of Middle Andaman Island have great difficulty in knowing whether they are awake or asleep at a given time. However, the inhabitants can be classified into two broad types—Awakers and Asleepers.

    An awaker is characterized by the fact that everything they believe while they are awake is true, and everything they believe while they are asleep is false. An Asleeper on the other hand, has the characteristic that everything he believes while asleep is true, and everything he believes while awake is false.

    8. The Island has a King, an advisor and a Doctor. At one point, the Doctor believed that his bosses were of different types. Twelve hours later, he changed his state (from sleeping to waking or from waking to sleeping), and he then believed that the King was an Awaker and the Advisor was an Asleeper. What type is the King?

    a) Awaker
    b) Asleeper
    c) Could be either of the two types
    d) Data inconsistent

    9. With reference to the previous question, what type is the Advisor?

    a) Awaker
    b) Asleeper
    c) Could be either of the two types
    d) Data inconsistent

    10. At one time, an inhabitant believed that he was both asleep and awake, what was he really?

    a) Awaker
    b) Asleeper
    c) Could be either of the two types
    d) Data inconsistent

    For practicing more exercises on Logical/Analytical Reasoning keep visiting jagranjosh.com

    Answers:

    In this section, we will provide you the solutions to the above questions along with their explanation.

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