LSAT Logic Games: Combining Rules in Sequencing Games

LSAT Logic Games: Combining Rules in Sequencing Games

Sequencing games that ask you for absolute answers, such as “the latest X could be in the sequence is,” may require you to combine two or more of the initial rules outlined in the game. This may sound challenging at first, but will make sense as we go along.

 

Example Sequencing Game

Individual hour-long practices will be scheduled for each of the following six sports- Football, Golf, Handball, Judo, Karate, and Luge. The practices are an hour long and all occur on the same day between the hours of 1:00 P.M and 6:00 P.M. The practice schedule is subject to the following conditions.

Golf is earlier than Karate

Golf is either immediately before or immediately after Luge

Exactly one practice time separates Handball and Judo

The earliest Karate could begin is:

A:  1 P.M.

B:  2 P.M.

C:  3 P.M.

D:  4 P.M.

E:  5 P.M.

Analysis

As always, the first step is to translate your rules into short-form. The next step, the “meta-rule” building. A “meta-rule” is simply two or more rules combined to make one larger, more restrictive rule. You probably already make these rules in your head without realizing you are doing it, or at least with out realizing the process has a name.

For this question, lets look at Rules 1 and 2.

Rule 1 says: G…K. From this we know that K cannot be at 1 PM, otherwise G would have to be after K thereby violating the rule. Thus, we can discard answer A.

Rule 2 says: GL or LG. From this we can now combine the urles: G and L must be before K. If L were after K then G, since it has to be right beside L would automatically have to be after K- which would violate Rule 1. So now we have meta-rule 1: G,L…K. Plugging this new rule into our diagram means that K cannot be at 2Pm either. We can thus discard answer B.

Now we can see that after using our rules, and out meta-rules, the earliest possible for K to be is at 3PM. Sure enough, if you put K in at 3PM there is a possible correct sequence. Thus C is our answer!

Combining rules is helpful not just for sequencing games, but for all types of games. Thus, try taking a couple extra seconds when you are drawing your setup and making deductions  to see if you can come up with any of these bigger rules. They will definitely save you time later on in the game!

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