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If x and y are 2 sets such that X∪ Y has 40 elements, X has 25 elements and Y has 24 elements, how many elements does X∩ Y have? |
| Answer» If x and y are 2 sets such that X∪ Y has 40 elements, X has 25 elements and Y has 24 elements, how many elements does X∩ Y have? | |