the other statement can be one person writes one paper in one day then 4 persons would write 4 papers in 4 days not 100 days

100 men write 100 papers in 100 days in the other words 1 person writes 1 paper in 1 day then if each person writes 1 paper then after 100 days 100 people would write 100 papers very simple

but 100 cannot be the answer

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