If Kate is scheduled for Wednesday, which one of the following could be true?

JenaeHB October 22, 2014

I can not figure out the answer

I have Victor and Katie in Tuesday and Wednesday and Nancy can't be Monday and Iris and Henry can't be Monday without Nancy being Tuesday or Friday. I'm not sure what I'm doing wrong. Any help would be greatly appreciated.

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Naz October 24, 2014

You can access the video explanation by pressing the "play" button on the screen.

Hope that clears things up! Please let us know if you have any other questions.

GreaterFool November 6, 2014

It will not let me play the video.

Naz November 14, 2014

The new update which will be available in the next couple days will fix this issue. Sorry for the inconvenience!

Hope that clears things up! Please let us know if you have any other questions.

Roshan April 14, 2018

Hello! Rule #2 says "if Harry is on Monday then Nancy is on a Friday" and in the logic games video explanation it emphasizes to always write out the opposite, for example "if harry is NOT Monday then Nancy is NOT Friday." So how come Wednesday is an acceptable placement for Harry? Because if Harry is on Wednesday then the set up would be: V K H I N - but how is N allowed to be on Friday since H is not on Monday? Because the (opposite) rules says if H is not on Monday then N is not on Friday but Friday was put on N and it was correct. So I'm just confused. Maybe I shouldn't do the opposite thing bc it confuses me?

jle20 June 3, 2019

I'm having trouble with Q3. Rule 3 says that if N is on Tues, then I is on Mon. If that, then wouldn't the correct answer in the video contradict the rule?

Ravi June 3, 2019

Hey there,

You're referring to writing the contrapositive, which isn't the
opposite; rather, it's the logically equivalent statement.

If Harry is on Monday, then Nancy is on a Friday.

The contrapositive for this is

If Nancy isn't on a Friday, then Harry isn't on a Monday

Harry can go on Wednesdayâ€”that's a totally fine scenario, and if
Harry's on Wednesday, it's fine if Nancy is on Friday. The reason for
this is because the original rule is

If Harry is on Monday, then Nancy is on a Friday

Harry on Wednesday means that the sufficient condition (Harry on
Monday) is failed. When the sufficient condition is failed, the rule
falls away, so Nancy is free to go on Friday or on another day because
the sufficient condition for the rule wasn't met. This is why the
situation works.

@JLE,

If K is on Wednesday, we know that V is on Tuesday. We also know that
if H is on M, then N is on Friday, leaving I for Thursday

H V K I N

However, what if H isn't on Monday? H could go on Thursday or Friday,
trading off with N since N can't go Monday. This means that I would go
on Monday on this board.

I V K H/N

In looking at these scenarios, we see that (C) is totally possible.
Nancy could be scheduled for an earlier day than Harry in the second
scenario, so (C) is the correct answer choice.

Hope this helps. Let us know if you have any more questions!