A work is done by 31 persons not all of whom have the same capacity to work. Every day exactly 2 persons, do the work with no pair
of persons working together twice. Even after all possible pairs have worked once, all the persons together works for two more days
to finish the work. Find the number of days in which all the persons together will finish the whole work?
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Step-by-step explanation:
in two days ok ok OK OK OK OK
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