यदि \(A\cap B=\varnothing\), तो (A-(A-B)) किसके बराबर है?
If \(A\cap B=\varnothing\), then (A-(A-B)) is equal to which set?
Explanation opens after your attempt
Correct Answer
A. \(\varnothing\)
Concept
When \(A\cap B=\varnothing\), (A-B=A). Hence (A-(A-B)=A-A=\varnothing).
Why this answer is correct
The correct answer is A. \(\varnothing\). When \(A\cap B=\varnothing\), (A-B=A). Hence (A-(A-B)=A-A=\varnothing).
Exam Tip
जब \(A\cap B=\varnothing\), तब (A-B=A) होता है। इसलिए (A-(A-B)=A-A=\varnothing)।
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