If A and B are two non-empty sets then A ∪ B = _____?
- {x|x ∈ A or x ∈ B}
- {x|x ∈ A and x ∈ B}
- {x ∈ A or x ∈ B}
- None of these
Explanation
The union of two sets A and B includes all elements that are in A, B, or both.
This is represented as: A ∪ B = {x | x ∈ A or x ∈ B}.
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