LSAT 21, Logic Game 2, Question 11, LSATHacks

LG Game 2 Question 11 Explanation, by LSATHacks

Here we are asked to make everything a different color. The first scenario works. If light 1 is green and light 2 is purple then that triggers no rules. We could make the third bulb Y, which is a different color from the first two. That does trigger the third rule, but it’s already true:  P is in the second spot. A is CORRECT.

B is wrong because the third color is purple. If we put purple in spot 3 then that triggers rule 3 and forces 2 to be purple, too.

C is also wrong because of rule 3. If yellow is in line 3 then purple is in line 2. But purple is already in spot 1 in this answer choice.

D is wrong because of rule 2. If green is in light 2 then green must be in light 1

E is wrong because of rule 3. If P is in light 3 then P also has to be in light 2.