Question #1651

Why can Henry be scheduled for Wednesday?

Started by PSIRA · started 2019-11-13 20:21 · last activity 2019-11-13 20:44 · 1 reply

In this scenario, we have to use "HI" and "VK" If Henry performs on Wednesday, the week would have to look like V K H I N M T W R F However, it is stated that the rule "If Harry is scheduled for Monday, Nancy is scheduled for Friday." is the same in reverse: "If Nancy is scheduled for Friday, Harry is scheduled for Monday" In this scenario, Nancy has to be Friday because V and K still need to be next to each other. But that would mean H would have to be Monday which defeats the entire question. Does the reverse of the original rule not apply to this question or am I missing something?

Replies

  1. Irina · 2019-11-13 20:44

    @Jxelaine, The proper contrapositive of this rule is "if Nancy is not scheduled for Friday, then Harry is not scheduled for Monday. To conclude anything about Harry's placement based on Nancy's being scheduled for Friday would amount to a logical fallacy of mistaken reversal/ affirming the consequent. Remember that a proper transposition requires us to reverse AND negate both sides. Thus, if H is scheduled for W, this schedule would not violate any of the rules: V K H I N Let me know if you have any other questions.

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