Question
Who among the following lives on
Floor-2? Study the following information carefully to answer the given questions: There are nine persons i.e. P, Q, R, S, T, U, V, W and X who lives in a building having Three floors such that ground floor is numbered as 1 and above it is 2 and so on up to top floor numbered as 3. Each of the floors consist of 3 flats as flat-1, flat-2 and flat-3. Flat-1 of floor-2 is immediately above flat-1 of floor-1 and immediately below flat-1 of floor-3 and in the same way flat-2 of floor-2 is immediately above flat-2 of floor-1 and immediately below flat-2 of floor-3 and so on. Flat-2 is in east of flat-1 and flat-3 is in east of flat-2.Each of them likes different fruits i.e. Apple, Mango, Grapes, Banana, Watermelon, Kiwi, Papaya, Guava and Orange. Note: If A lives above (or below) B, then there are living in same flat unless stated otherwise. Number of Flats towards west of T is equal to the number of flats towards east of V, but in different floors. X who likes Papaya lives to the immediate west of R who likes Mango and lives in Flat-3 of Floor-1. U does not live on Floor-2 but lives to the East of the one who likes Apple who does not live in an even numbered flat. T and P lives in the same flat which is Flat-3. Q lives northwest of S. The one who likes Kiwi doesn’t live in topmost floor. The one who likes Watermelon fruit and S lives in the same flat. W does not like Apple and lives one of the extreme west flat. The one who likes Orange lives to the immediate west of the one who likes Guava and T likes Grapes. Persons like Orange fruit and Banana fruit lives in the same flat and W does not like Banana fruit.Solution
X who likes Papaya lives to the immediate west of R who likes Mango and lives in Flat-3 of Floor-1. 
T and P lives in the same flat which is Flat-3.Note: Here we get one more case. Case-1 
Number of Flats towards west of T is equal to the number of flats towards east of V, but in different floors. Note: Here we get one more possibility from each case. Thus 4 we have total cases Case-1 
U does not live on Floor-2 but lives to the East of the one who likes Apple who does not live in an even numbered flat. W does not like Apple and lives one of the extreme west flat. Note: U must live on Flat-2 of Floor-3 (only possibility in all cases). Also we get only possibility for W in each case, except case-2 Case-1 
The one who likes Watermelon fruit and S lives in the same flat. Q lives northwest of S Note: Case-2 gets rejected since Q lives northwest of S is not possible. Case-1 
The one who likes Orange lives to the immediate west of the one who likes Guava and T likes Grapes. Persons like Orange fruit and Banana fruit lives in the same flat and W does not like Banana fruit. The one who likes Kiwi doesn’t live in topmost floor. Note: T likes Grapes as given. Finally P likes Kiwi in case-1-A Case-1 gets rejected since W doesn’t like Banana Case-2-A gets rejected since the one who likes Kiwi doesn’t live in topmost floor Case-1A (Final arrangement) 
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