Asked by Alex
Find the number m of elements in the union of sets A, B, C, D where:(i) A, B, C, D have 50, 60, 70, 80 elements, respectively.(ii) Each pair of sets has 20 elements in common.(iii) Each three of the sets has 10 elements in common.(iv)All four of the sets have 5 elements in common.
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Answered by
kedirotofik
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Answered by
kedirotofik
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