यदि (n(A)=28), (n(B)=19), और (n\(A\cup B\)=39), तो (n\(A\cap B\)) क्या है?
If (n(A)=28), (n(B)=19), and (n\(A\cup B\)=39), what is (n\(A\cap B\))?
Explanation opens after your attempt
B. (8)
Concept
(n\(A\cap B\)=28+19-39=8). When union is given, add both sets and subtract the union.
Why this answer is correct
The correct answer is B. (8). (n\(A\cap B\)=28+19-39=8). When union is given, add both sets and subtract the union.
Exam Tip
(n\(A\cap B\)=28+19-39=8)। संघ दिए होने पर दोनों समुच्चयों का योग लेकर संघ घटाएं।
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