Who lives to the south east of B?

Solution

1. C lives immediately above G, who doesn’t live on a prime numbered floor. 2. A lives to the south east of G.J’s floor is immediately below A’s floor but they live in different types of flat. So, G and C live on floor 4 and floor 5 of B1, respectively. A lives on floor 2 or floor 3. E and F live on same numbered floor.  H lives on floor 1 of one of the buildings, this is not possible in case II, so case II is rejected.  I lives above D, who lives to the north east of E. So, E and F live on floor 3. I lives on floor 5 of B2. B lives on floor 2 of B1. The final table is given below