Question Paper from: IBPS PO Prelims 2016

M, N, O, P, Q, R and Sare seven people live on seven different floors of a building but not necessarily in the same order. The lowermost floor of the building is numbered 1, the one above that is numbered 2 and so on till the topmost floor is numbered 7. Each one of them has different income i.e. 3500, 15000, 7500, 9000,11000, 13500 and 5000. (But not necessarily in the same order.) M lives on an odd numbered floor but not on the floor numbered 3. The one who has the income of 11000 lives immediately above M. Only two people live between M and the one who has income of 7500. The one who has an income of 15000 lives on one of the odd-numbered floors above P. Only three people live between O and the one who has an income of 15000. The one who has an income of 7500 live immediately above O. R earns 4000 more than Q. The one who has the income of 3500 lives immediately above the one who has income of 5000.Only one person lives between N and Q. N lives on one of the floors above Q. Neither O nor M has an income of 9000. Q does not has income of 7500.

How much income R has?