Everyday one employee leaves with 2 briefcases and returns on the 4th day. These 2 briefcases wont be available till the 05th day as the departing employee leaves before the briefcases arrives back and cleaned properly. How many briefcases are needed to ensure that the departing employee has 2 briefcases everyday.

Correct result:

n =  8


n=2 (51)=8

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