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UPSC CDS Math Set Theory Questions

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Question : 8

Total: 14

Let A = {7, 8, 9, 10, 11, 12} and B = {7, 10, 14, 15}. What is the number of elements in (A-B) and (B-A) respectively ?

2 and 4
4 and 2
2 and 2
4 and 4

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