MEMORIAL DAY SALE!
Get 15% OFF All
Invite a Friend
Fee Waiver Scholarship
LSAT Test Dates
Free LSAT Resources
LSAT Message Board
June 2016 LSAT
How many of the students are there who could be the one assigned to 1921?
on December 15, 2019
Why is D correct? Why is C incorrect?
Create a free account to read and take part in
Already have an account?
on December 16, 2019
The question asks us how many of the students could be assigned to 1921?
Each of four years - 1921, 1922, 1923, 1924 will have exactly one student assigned to it out of six students - L M O R T Y.
The rules tell us that:
- If R is assigned to the project then O must be assigned to the year immediately prior to him.
We can thus immediately eliminate R.
-If T is assigned to the project then R must be assigned to the project, which means the only possible placements for T is:
O R T [ ]
1 2 3 4
Since we have OR block, and neither O nor R can be assigned to 1923 per rule 1, T must be assigned to 1923 if she is assigned to the project. We can thus eliminate T.
-Only L or T can be assigned to 1923.
We can see from the scenario above that if T is assigned to 1923, L could only be assigned to 1924, and if T is not assigned to a project, L must necessarily be assigned to 1923, otherwise, no student is assigned to 1923. Thus, the only possible placements for L are 1923 if T is out, or 1924 if T is in, which allows us to eliminate (C).
O R T L
X X L X
The remaining three students - O M and Y could all be assigned to 1921, hence (D) is the correct answer.
Let me know if this makes sense and if you have any other questions.