Exams › IBPS PO › Reasoning

Nine persons B, G, K, M, O, R, S, T and X live in a nine-storey building such that the bottom floor is numbered 1 and the top floor is numbered 9, but not necessarily in the same order. Three persons live between K and R, and R lives two floors above B. As many persons live between G and X as between X and M. Only two persons live between S and X. G lives on one of the floors above B, who lives on an odd-numbered floor. At least two persons live between O and R. S lives below K. M and R do not live adjacent to each other. Neither O nor T lives on the top or bottom floor. Which of the following statements is incorrect?

1. M lives on fourth floor.
2. B lives just below S.
3. K and G live on adjacent floors.
4. Only A
5. Both A and B
6. Neither B nor C
7. All of these

Correct answer: All of these

Solution

Using the given distance constraints, the floor arrangement can be uniquely determined. In that arrangement, M is not on the fourth floor, B is not just below S, and K and G are not adjacent, so all the listed statements are incorrect.

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