यदि (n(A)=68), (n(B)=53) और (n\(A\cup B\)=91) है, तो (n\(A\cap B\)) कितना होगा?
If (n(A)=68), (n(B)=53), and (n\(A\cup B\)=91), what is (n\(A\cap B\))?
Explanation opens after your attempt
C. (30)
Concept
(n\(A\cap B\)=68+53-91=30). When the union is given, subtract it from the sum to get the intersection.
Why this answer is correct
The correct answer is C. (30). (n\(A\cap B\)=68+53-91=30). When the union is given, subtract it from the sum to get the intersection.
Exam Tip
(n\(A\cap B\)=68+53-91=30) होगा। संघ दिया हो तो प्रतिच्छेद निकालने के लिए योग में से संघ घटाएं।
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