यदि (n(U)=76), बाहर का क्षेत्र (18), केवल (A) (20), और केवल (B) (23) है, तो (n\(A\cap B\)) क्या है?
If (n(U)=76), the outside region is (18), only (A) is (20), and only (B) is (23), what is (n\(A\cap B\))?
Explanation opens after your attempt
A. (15)
Concept
The common part is (76-18-20-23=15). For an unknown region, subtract known regions from the total.
Why this answer is correct
The correct answer is A. (15). The common part is (76-18-20-23=15). For an unknown region, subtract known regions from the total.
Exam Tip
साझा भाग (76-18-20-23=15) है। अज्ञात क्षेत्र के लिए कुल से ज्ञात क्षेत्र घटाएं।
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