यदि (n\(A\cap B'\)=29), (n\(A'\cap B\)=33), (n\(A\cap B\)=17) और (n(\(A\cup B\)')=21) है, तो (n(U)) कितना है?
If (n\(A\cap B'\)=29), (n\(A'\cap B\)=33), (n\(A\cap B\)=17) and (n(\(A\cup B\)')=21), then what is (n(U))?
Explanation opens after your attempt
A. (100)
Concept
The sum of all four disjoint regions is (29+33+17+21=100). The universal set includes both inside and outside regions.
Why this answer is correct
The correct answer is A. (100). The sum of all four disjoint regions is (29+33+17+21=100). The universal set includes both inside and outside regions.
Exam Tip
सभी चार अलग क्षेत्रों का योग (29+33+17+21=100) है। सार्वत्रिक समुच्चय में अंदर और बाहर दोनों क्षेत्र आते हैं।
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