Question
Four of the following five are alike in a certain way
based on the given arrangement and thus form a group. Which is the one that does not belong to that group? Study the following information carefully and answer the question given below: There are eight people A, B, C, D, M, N, O and P are living in a 8 floor Building on different floors from top to bottom (such as ground floor is numbered as 1 and top floor is numbered as 8) but not necessarily in the same order. Only one person lives between the floors of C and D who lives on any floor below the floor of M. P lives on the floor immediately above the floor on which B lives. C lives on the third numbered floor. Only one person lives between the floors of M and N. M lives above N. Only two persons live between the floors of C and O.Solution
1. C lives on the third numbered floor. 2. Only two persons live between the floors of C and O. 
3. Only one person lives between the floors of M and N. 4. M lives above N. 
5. Only one person lives between the floors of C and D. 6. C lives on one of the floor below the floor of M. 7. P lives on the floor immediately above the floor on which B lives. 
There is no space for P and B in CASE1A so CASE1A is cancelled out. Final arrangement: 
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