Four engineers (K, L, M, N) inspect structures 1, 2, 3, and 4. K does not inspect 1 or 4. L inspects an odd-numbered structure. M inspects structure 2. Which structure number must N inspect?
Answer and explanation
Correct answer: C. Structure 4
- Step 1: M inspects 2. Remaining structures: 1, 3, 4. Step 2. K cannot inspect 1 or 4, so K inspects 3. Step 3. L inspects an odd structure, so L inspects 1. Step 4. N must inspect structure 4. Answer: Structure 4. Why not the others: Structure 1 is L; Structure 3 is K; Structure 2 is M.
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