LSAT (Law School Admission Test)Analytical ReasoningHard
A panel of five judges—J, K, L, M, N—is evaluating six contestants—P, Q, R, S, T, U—in a singing competition. Each judge evaluates exactly one contestant, and each contestant is evaluated by at least one judge. The assignments must adhere to the following conditions: 1. Judge J evaluates either P or Q. 2. Judge K evaluates R. 3. Judge L evaluates the same contestant as Judge M. 4. Judge N evaluates a different contestant than Judge K. 5. If Judge J evaluates P, then Judge L evaluates T. Which of the following is a complete and accurate list of the judges who could evaluate contestant S?
- AJ, L, M, N
- BJ, N
- CL, M, N
- DL, M
Show answer & explanationAnswer & explanation
Correct answer: C. L, M, N
Judge K evaluates R (rule 2). So K cannot evaluate S. Judge J evaluates P or Q (rule 1), so J cannot evaluate S. This leaves L, M, N as potential evaluators for S. L and M evaluate the same contestant (rule 3). If L and M evaluate S, this is possible. N evaluates a different contestant than K (rule 4). Since K evaluates R, N can evaluate S. Therefore, L, M, and N could evaluate S.
Why the other options are wrong
- A. J cannot evaluate S (rule 1). This option is incorrect.
- B. J cannot evaluate S (rule 1). This option is incorrect.
- D. This option is incomplete. N could also evaluate S.
Identifying Possible Assignments
Determining which elements can be assigned to a specific role or group without violating any rules.
- Involves checking each potential assignment individually.
- Requires ensuring all rules can still be satisfied with the assignment.
- Often uses a process of elimination for impossible assignments.
Memory trick: Who Can Do What, Without Breaking Rules?