If all the persons are arranged in alphabetical order from bottom to top, then how many persons remain unchanged in their positions?

A One Correct Incorrect

B Two Correct Incorrect

C Three Correct Incorrect

D More than three Correct Incorrect

E No one Correct Incorrect

Detailed Solution

We have, M lives on an even numbered floor but above fifth floor. Only three persons live between M and L. From the above condition, there are two possibilities

Again we have, J lives two floors above L. P lives immediately above J. Only one person lives between P and K, who lives above J.

Again we have, As many floors below K as above O. R lives above Q but below N, who doesn’t live on the topmost floor. So Case1 gets eliminated, hence the final arrangement becomes

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