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MBT and MBF

courteneyrichmondcourteneyrichmond Alum Member
edited October 2023 in Logical Reasoning 4 karma

Hi! I am struggling with the must-be-true and must-be-false questions. If anyone can give me some advice, I would highly appreciate it!!!

Comments

  • pipelineporterpipelineporter Live Member
    33 karma

    I’ll be speaking in LG.

    The way I think of it is comparing them to their “could” counterparts.

    A could be true means it could happen, but doesn’t have to for the scenario to be true.

    Consider a scenario where the only rules are X-Y and X-Z with the players being XYZ over 3 days.

    You could have:
    XYZ
    XZY

    Both satisfy the rules of X-Y and X-Z. In this problem, a could be true would be Y is in the 2nd position. This could be true, but it ISN’T always true, because the other scenario exists where Y is in the third position.

    Now let’s take the same game and say what “Must be true.”

    A. Y is in position 3
    B. Y is in position 2
    C. Z is in position 2
    D. Z is in position 3
    E. X is in position 1

    Given all of these choices the only one that MUST be true is that X is in position 1 (answer choice E). In all possible scenarios X will always be in position 1, therefore it must be true. (Keep in mind, none of the other choices are false for could be true, because they all could be true, but they don’t HAVE to be true.

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