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Mathematics for IGCSE & O level - Sets (Section 3 - No. 17)

If A = {1, 2, 3} and B = {3, 1, 2}, what is the relationship between A and B?
A ⊆ B
B ⊆ A
A = B
A and B are disjoint

解释

The elements of A and B are identical, so they are equal sets.

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