List of top Data Interpretation & Logical Reasoning (DILR) Questions asked in CAT

Answer the questions based on the information given below.
Sixteen different flats are in a four-floor building, whose bottommost floor is numbered as 1 and the topmost floor is numbered as 4. There are four types of flats on each floor (Flat W, Flat X, Flat Y, and Flat Z) such that flat W is in west of flat X, which is in west of flat Y, which is in west of Flat Z. Flat W of floor 1 is immediately below the flat W of floor 2, which is immediately below of flat W of floor 3 and so on, similarly, for flat X, flat Y and flat Z. All flats are of different area (in metre squares) (45, 50, 55, 60). At most four flats have the same area.
Note: Area of different flats on the same floor must be different. Ex- if area of flat W of 4th floor is (n) metre sq. then area of flat X, flat Y and flat Z on the 4th floor cannot be same as area as flat W.
The difference between area of flat W and flat X of the 2nd floor is 15 metre sq. The area of flat Z of 4th floor is more than the area of flat W of 4th floor. The sum of area of flat W of all the floors is 195 metre sq. The sum area of flat Z of all the floors is 225 metre sq. The sum of area of flat X and flat Z of the 3 rd floor The sum of area of flat W of all the floors is 195 metre sq. The sum area of flat Z of all the floors is 225 metre sq. The sum of area of flat X and flat Z of the 3rd 1st floor and flat X of 3rd floor have same area The difference between area of flat W and flat X, of the 1st floor is 5 metre sq.The sum of area of the 1st and the 4th floor of Flat Y is 110metre sq. Flat Z of 1st floor and flat X of 4th floor are of same area. The sum of area of flat X of all the floors is 210 metre sq.