Previous Year Questions

A building consists of certain number of floors. The bottommost floor is numbered as 1, the floor above it as 2 and so on. Each floor consists of three flats 1, 2 and 3 such that flat 2 of each floor is to the west of flat 3 and to the east of flat 1.

The information about only few persons is known.

The floor and the flat number of G is the same.

F, G and J live on the consecutive floors where none of them lives in the same flat number.

I lives to the west of A and B.

B lives immediate below C and both live in an even numbered flat.

A lives immediate above F's floor.

There is only one floor above E, who lives in flat 1. There are five floors between the floors of A and E.

The total number of floors in a building is a composite number.

Thus, cases 1, 1a, 2, 2b, 3, 3a, 3b and 3c are invalid.

D lives on one of the floors between C and G. Neither C nor J lives in the same flat as D.

Not more than three persons live in Flat 1 in the building.

So, case 2a is invalid.

Therefore, the final arrangement is:

The total number of floors in the building is 12.

Also, 15 > 12 > 10