Among six people P Q R S T and V each lives on a sifferent floor of a six storey building having six floors numbered one to six (the ground floor is numbered 1 the floor above it number 2 and so on and the topmost floor is numbered 6) Who lives on the topmost floor? (I)There is only one floor between the floors on which R and Q live. P lives on an even numbered floor. (II)T does not live on an even numbered floor. Q lives on an even numbered floor. Q does not live on the topmost floor. (III)S lives on an odd numbered floor. There are two floors between the floors on which S and P live. T lives on a floor immediately above R's floor.

Data sufficiency questions are designed to check your ability to analyse & categorise information based on underlying concepts rather than calculations. So you should try to observe -  analyse and to find linkages between various statements rather soing lengthy calculations.