Which of the following Flat is vacant?

1. B lives in an even numbered flat on lowermost floor i.e. B lives on floor ground floor in flat 2. 2. K lives in an even numbered flat on floor number 2. B and C live on same floor. E lives immediately above Nand the numbers of their flats is same. So, Now, C either lives immediate west or east of B which means E either lives in flat 3 or flat 1. So, we have two possibilities. Case I: When C and E live on flat – 3: 3. G and A live on same floor. I lives to the immediate west of G. G lives immediately below the vacant flat and the flat number of vacant flat and G is same. A lives in flat – 1. There is one floor between G and F. Now, G lives immediately below vacant flat so, the vacant flat must be in topmost floor. Case I: When C and E live on flat – 3: 5. D lives somewhere above J in same flat number, but not on flat 3. Now, we cannot fix D and J in same flat number in case II, so, case II is invalid. The final arrangement is as follows