Direction: Study the following information carefully and answer the questions given below.
There are six persons i.e. Anu, Daya, Rajesh, Balu, Elza, and Varun who lives in a building having three floors such that the ground floor is numbered 1 and above it is 2 and so on up to the top floor is numbered 3. Each of the floors consists of 2 flats - flat-1 and flat-2. Flat-1 of floor-2 is immediately above flat-1 of floor-1 and immediately below flat-1 of floor-3 and the same way followed by flat-2. Flat 2 is east of Flat 1.
No one lives to the east of Balu. Varun lives in a flat on floor 1. Elza lives immediately below Anu. Rajesh lives immediately below Balu. Rajesh lives below Elza but in different flat.
If Daya interchange her flat with Balu's flat, then Balu will live on which floor and in which flat?