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1. A={1,2,3}B=∅,A∪B=?
- A. {1,2,3}
- B. {1,2,3}
- C. {1,2,3}
- D. {1,2,3}
Answer: Option A
Explanation:
দেয়া আছে, A = {1,2,3} B = ϕ
∴ AUB = {1,2,3}U{ϕ} = {1,2,3}
∴ AUB = {1,2,3}U{ϕ} = {1,2,3}
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