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Please help me solve this please
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Please help me solve this please

Please help me solve this please-example-1
User Muhammed Neswine
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If the number of elements in A ∪ B is 49, the number of elements in set A is 22 and the number of elements in set B is 34
therefore the number of elements in A ∩ B is 22 + 34 - 49 = 56 - 49 = 7
User War Gravy
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