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Mathematics, 03.12.2019 00:31 shoobywee

How many elements are in the union of four sets if
each of the sets has 100 elements,
each pair of the sets shares 50 elements,
each three of the sets share 25 elements,
and there are 5 elements in all four sets?

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How many elements are in the union of four sets if
each of the sets has 100 elements,
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