LG Game 4 Question 23 Explanation, by LSATHacks
For rule substitution questions, you should consider the full effect of the rule in question. Usually the right answer is just a rephrasing of the rule’s effects.
If GG can only go on the hours, then that means GG can’t go on the half hours.
So GG can’t start 2nd or 4th. C is CORRECT.
You might have noticed there’s another half hour slot: 6th. This rule doesn’t say GG can’t go there. So how is this a complete answer?
Well, we don’t need the first rule to tell us that GG can’t start 6th. Since there are two G’s, they couldn’t start on the last spot. There’s be no place to put both G’s.
A is wrong because it would allow GG to start on the half hour as long as T was elsewhere.
B is wrong because it is too restrictive. GG should also be able to start 3rd.
D is just weird. It has nothing to do with the original rule. Normally putting G third doesn’t affect R.
E also makes little sense. Avoid answers that introduce conditionals that weren’t obviously part of the original rules.
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If I need to draw, then I draw a new diagram beside the question. This reduces eye scanning time, and keeps the main diagram clear.
Unclear diagrams and focus lost during eye scanning are a MAJOR cause of LG errors.
On this question I didn’t need to make a diagram though. I just looked at the main one.
Do you draw a new diagram for every question or you use one diagram but erase the concepts you wrote for the previous question?