9 persons on 9 floors. 3 between K and R; R=2 floors above B. G,X,M: |G-X|=|X-M|. 2 between S and X. G above B (odd floor). ≥2 between O and R. S below K. M,R not adjacent. O,T not at top/bottom. Top and bottom floors occupied by?

Correct answer: KS

Solution

S below K. S at floor 1 (bottom), K at floor 9 (top). O,T not at 1 or 9 ✓. Other persons fill floors 2-8 satisfying remaining constraints.

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