Exams › IBPS PO › Reasoning

8 persons P-W in 8-storey building. How many live above R? Statement I: P on even floor. 3 between U and T. S immediately below T. U immediately above P. Statement II: At least 2 between S and Q. R immediately above V. 2 between V and W.

1. Statement I alone sufficient, II alone not sufficient.
2. Both statements I and II together necessary.
3. Either statement I or II alone sufficient.
4. Both together insufficient.

Correct answer: Both statements I and II together necessary.

Solution

Statement I alone: places U,T,P,S in a chain but multiple arrangements possible; can't determine R's position. Statement II alone: places V,R,W chain but can't anchor to building without I. Both together: fully determine the arrangement and count above R.

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