consider the proper subset of {1,2,3,4} how many of these proper subsets are supersets of the set {3}
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one man digs a dug in 6 days.....
another man digs the same sized dug in 12 days according to his power capacity...
another man digs the same sized dug in 24 days according to his power capacity...
how many days the will take if the all combinely dig the one same sized dug?
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Step-by-step exscececrcfplanation:
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