Directions: Pritam, Zeba, Joy and Anu were assigned duties in the alphabetical order of their names. Only one of them is assigned a duty on a day. This assignment is repeated in the same sequence. Working week starts from Monday and ends on Friday. Who worked for the least number of days and for how many days if the duties are assigned for 3 weeks?

The sequence of duties cycles alphabetically through the 4 people. Over a 3-week period consisting of 15 working days, 15 full duty shifts are assigned. Dividing 15 shifts by the 4 people gives 3 full rounds for everyone, with 3 extra people working a fourth shift in the new cycle. Therefore, Anu works for 4 days, Joy works for 4 days, Pritam works for 4 days, and Zeba works for the least number of days at 3 days.

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