यदि (n(A)=19), (n(B)=13), और (n\(A\cup B\)=25), तो (n\(A\cap B\)) क्या है?
If (n(A)=19), (n(B)=13), and (n\(A\cup B\)=25), what is (n\(A\cap B\))?
Explanation opens after your attempt
B. (7)
Concept
(n\(A\cap B\)=19+13-25=7). To find intersection, subtract the union from the sum of both sets.
Why this answer is correct
The correct answer is B. (7). (n\(A\cap B\)=19+13-25=7). To find intersection, subtract the union from the sum of both sets.
Exam Tip
(n\(A\cap B\)=19+13-25=7)। प्रतिच्छेद निकालते समय दोनों समुच्चयों के योग से संघ घटाएं।
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