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Mathematics for IGCSE & O level - Sets (Section 1 - No. 40)

If set A = {a, b, c} and set B = {c, d, e}, what is A ∪ B?
{c}
{a, b, c, d, e}
{a, b}
{d, e}

설명

The union of A and B lists all the unique elements from each set

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