If U = {a, b, c, d, e, f}, A = {a, b, c}, B = {c, d, e, f}, and C = {c, d, e} find (A ∪ B) ∪ C.

Question

Accepted Answer

A ∪ B = { a, b, c } ∪ { c, d, e, f } = { a, b, c, d, e, f } ∴ (A ∪ B) ∪ C = { a, b, c, d, e, f } ∪ { c, d, e } = { a, b, c, d, e, f } = U.

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