On which day of the week (starting from Monday and ending on Sunday of the same week) did Sushant visit Chennai? I. Sushant visited Chennai two days after his brother visited Chennai II. Sushant did not visit Chennai either on Wednesday or on Friday.

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.