On which date in March was Pravin's father's birthday ? Statements I. Pravin Correctly remembers that his father's birthday is after 14th but before 19th March. II. Pravin's sister correctly remembers that their father's birthday is after 17th but before 21st March.

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.