B lives in an even numbered flat on lowermost floor i.e. B lives on floor ground floor in flat 2. Z lives in an even numbered flat on floor number 2. B and C live on same floor. P lives immediately above C and the numbers of their flats is same. So, Now, C either lives immediate west or east of B which means P either lives in flat 3 or flat 1. So, we have two possibilities. Case I: When C and P live on flat – 3: 
Case-2 When C and P live on Flat-1 
R and A live on same floor. X lives to the immediate west of R. R lives immediately below the vacant flat and the flat number of vacant flat and R is same. A lives in flat –1. There is one floor between R and Q. Now, R lives immediately below vacant flat so, the vacant flat must be in topmost floor. Case I: When C and P live on flat – 3: 
Case II: When C and P live on flat – 1 
D lives somewhere above Y in same flat number, but not on flat 3. Now, we cannot fix D and Y in same flat number in case II, so, case II is invalid. The final arrangement is as follows: 
The specialized agency of the United Nations that works towards defeating hunger via international effort i.e. FAO has its headqu...
What is the immediate and serious health threat posed by excessive nitrate concentrations in drinking water, especially to infants under 3 months of age?
Which of the following is an asexual reproduction?
Avena curvature test is related with
Southern com leaf blight is associated with which of the following cytoplasms of maize ?
Mulching materials are not being utilised to:
Which of the following is true for a completely randomized design?
Which type of irrigation utilizes floodwater effectively for agricultural purposes?
The substance that is added to make natural rubber strong and more bouncy is-
What is the correct definition of "Economic Injury Level (EIL)"?
