Mathematics for IGCSE & O level - Sets (Section 1 - No. 16) | ExamPlay

Mathematics for IGCSE & O level - Sets (Section 1 - No. 16)

If set A has 3 elements and set B has 4 elements, what is the maximum number of elements possible in A ∪ B?

3

4

7

12

Explicaţie

If the sets have no elements in common, the union has 3+4 = 7

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