This is an explanation of the fourth logic game from Section IV of LSAT Preptest 75, the June 2015 LSAT.
A business newsletter has five slots for each issue. Each issue should have at least three features from the following topics: finance, industry, marketing, and technology and each feature will occupy one or more of the slots. Any slot not taken by a feature should have a graphic. You must determine the possible arrangement of features and graphics based on the rules.
This game is fairly unique. I couldn’t say what type to call it. It’s sort of linear. Truth is, game type doesn’t matter much. The main thing on any game is understanding the effect of the rules and how they interact, and knowing a game’s “type” has nothing to do with that.
So in this game we have four features: finance, industry, marketing and technology. Features are interesting. They can span multiple slots. The game doesn’t set a max number of slots. If there were no other rules, this would be an allowable setup:
That’s a single finance feature filling all five slots. The arc to the right indicates that it’s a single large feature.
This isn’t an allowable combination because there are other rules. But I’m drawing it to show that there are no natural limits on the size of a feature.
In the setup, it says there at least three features. The setup does not say three different features. So this is actually an allowable setup:
That’s one three-slot finance feature and two single-slot finance features. This is perfectly legal and it obeys all of the rules!
A lot of people are afraid to make a diagram like the one above. “Is it allowed?” they ask. Yes! On logic games, if something isn’t explicitly forbidden, then it’s allowed.
This game is very flexible. Once you internalize that, it’s easy!
Ok, let’s look at the rules. If there’s no feature, there’s a graphic. Simple enough.
Next the listed rules:
- Multi slot features are consecutive
This just means that if a finance feature is in three slots, then it’s in 1,2,3 or 2,3,4 and not 1,3,5.
- If there’s a finance or technology feature, we need one of those in slot 1.
I believe this means that if, say, there’s a tech feature in slot 3, then slot 1 needs a tech or finance feature. I don’t think this rule means you need the same type in slot 1.
Note also that simply having a tech or finance feature in slot 1, and nowhere else, is also legal.
- Only one industry feature
Pretty straightforward. Don’t make more than one industry feature.
Marketing has no rules.
I actually drew no diagrams for the main setup on this game. What would I draw? The rules were so clear that it was easiest just to read them again if I forgot.
I think the main difficulty on this game is self-imposed. You probably want to think there must be more restrictions, because games tend to be restricted.
Nope. This game is incredibly open. Happens sometimes. The zones game is another example.
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