alleryStart learning →For x ∈ U and A, B ⊆ U, which condition is equivalent to x ∉ A ∪ B?
Ax ∈ A and x ∈ B
Bx ∈ A or x ∈ B
Cx ∉ A and x ∉ B
Dx ∉ A or x ∉ B
Answer & Solution
Correct answer: C. x ∉ A and x ∉ B
Being outside the union means belonging to neither set, so both non-membership conditions must hold.
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