These diagrams show the rules used to determine which of the sales representatives (K, M, P, Q, S, T, U) will be assigned to each sales zone (1, 2, 3).
Refer to these diagrams when solving this game. Copy them on your own page, and on each question make a new version of them in order to follow along with my explanations. You’ll learn much more if you draw along.
The setup section explains how to build this diagram.
Main Diagram
Rules
Scenarios
T is involved in both of the first two rules. Wherever you place T, it has an effect. Always look for variable mentioned in more than one rule.
It makes sense to construct scenarios using T. Just place T in a group, and apply the rules to see what you can deduce. Then do the same for the other two groups.
You need to be familiar with the rules to build scenarios. I’m going to say things like ‘U has to go with S’. I’ll expect you to know that I’m referring to rule 4. Review the rules if you’re unsure why I say something has to happen.
Here’s T in group 1. That forces U to go in group 2:
U has to go with S. This means we need at least 3 in group 3, so that it has more than group 2:
Group 2 can’t take any more people. I drew the vertical to show that it’s closed.
PQ, M and K are the only variables left to place.
PQ and one of M/K must go in group 3:
The other M/K can go in either group 1 or 3.
That scenario is complete. Let’s try T in group 2. This forces P to go in group 1, and U can’t go in group 2:
We can’t deduce much in this scenario. PQ go together, so Q is in group 1.
SU, M and K are left to place. They can go anywhere as long as you keep more variables in group 3 than group 2:
Lastly, try T in group 3. This forces P in group 1 and U in group 2.
You know Q goes with P and S goes with U:
Since there are two variables in group 2, you need to place three variables in group 3. Only M and K are left.
So if T goes in group 3, then everything is determined.
Here are the three scenarios I built above. They’re T in group 1, 2 and 3 respectively.
Scenario 1
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Scenario 2
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Scenario 3
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JD says
I did this game in a different sort of way. I put a lot of emphasis on rule 5, which states that more sales representatives work in zone 3 then zone 2. Rule 2 establishes that there is also at least one person working in Zone 2. Thus, there are two scenarios we can create based on the constraint that there are exactly seven sales representatives:
Scenario 1
Zone 1 – 4 workers
Zone 2 – 1 worker
Zone 3 – 2 workers
Scenario 2
Zone 1 – 2 workers
Zone 2 – 2 workers
Zone 3 – 3 workers
This and the deductions associated with it made the game super easy for me. Because, again, we know there is at least one person in Zone 1 and one person in Zone 2, and Zone 3 must have more workers than Zone 2, there are no other scenarios. Does that make sense?
TutorLucas (LSAT Hacks) says
Your set-up is actually missing one scenario:
Zone 1 – 1 worker – T
Zone 2 – 2 workers – SU
Zone 3 – 4 workers – PQKM
With that out of the way, as you’ve pointed out here, you could definitely build scenarios on the basis of numerical distributions. I tend to prefer starting out with the letter-variables as a general rule (as is done in the explanation) because you’re going to have work with them anyway. But, both methods for drawing templates are valid — in either case, you’re placing variables on the basis of some kind(s) of restriction(s).
Dee says
Hi,
I’m a little confused with your Scenario 1. If Group 2 is full as indicated by the vertical line after the SU, then where would one of M/K fit? You say one of M/K goes in Group 3 and the other in Group 1 or 2, which doesn’t make sense if Zone 2 is full.
Thanks!
TutorLucas (LSAT Hacks) says
Thanks for catching that! It’s actually a typo. The explanation should read “The other M/K can go in either group 1 or 3.” The page has been updated.