If Freedom makes a voyage to Trinidad in week 5, which one of the following could be true?

Ilana on April 30, 2019

Creating scenarios

How do we know that there are necessarily two scenario options for the logic questions?

5 Replies

Ravi on April 30, 2019


Great question. You know that there are two scenarios for a particular
game when one variable can go in multiple positions. If it can go in
more than two positions, then you know there are at least 3 scenarios.

Let's take a look at this question.

The question asks, "If Freedom makes a voyage to Trinidad in week 5,
which one of the following could be true?"

If T goes 5th, there can only be two options for J (2nd or 3rd)
because J can't go 4th and having T in 5th prevents J from being in
6th. Thus, there are only two scenarios for this question.

If G goes 2nd, then G goes 1st, which forces M into 3rd and 6th and G
into 1st. In looking at our answer choices, we don't see one that fits
this scenario well, so let's move on to the other scenario.

If J is 3rd, then G goes 2nd, which forces M into 1st and either 4th
or 6th, and G into the slot that M does not occupy.

(D) puts M in 4th, and since we know that this is a possibility, this
is the correct answer choice.

Does this make sense? Let us know if you have any more questions!

Ilana on May 1, 2019

would there be a way to figure out if a variable can go in more than two positions without writing everything out?

Ravi on May 1, 2019

@izyat, it's possible, but it requires a strong level of intuition. It really depends on the individual game. In general, it's probably best to write out the scenarios when you see them, as it will give you a clearer sense of what's going on in the game.

Ilana on May 27, 2019

I'm a little bit confused because I am trying to figure out the missing premise questions, and it seems like there is no video with an explanation for it. The lecture seemed to cover logical reasoning questions themselves, but not the missing premises and variable questions. Am I missing a video?

Ravi on June 9, 2019

@izyat, great question. Check out the "Quantifiers Video" in the Quantifiers lesson. This video contains explanations of missing premise questions and will help you to better familiarize yourself with the subject material.