Are all the five friends viz. Leena Amit Arun Ali and Ken who are seated around a circular table facing the centre ? . I. Leona sits second to left of Amit. Amit faces the centre. Arun sits second to right of Leena. II. Ali sits third to the left of Ken. Ken faces the centre. Amit sits to the immediate left of All but Ken is not an immediate neighbour of Amit.

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.