यदि (n(U)=80), बाहर (15), केवल (A) (25), और केवल (B) (18) है, तो (n\(A\cap B\)) क्या है?
If (n(U)=80), outside is (15), only (A) is (25), and only (B) is (18), what is (n\(A\cap B\))?
Explanation opens after your attempt
A. (22)
Concept
The common part is (80-15-25-18=22). For an unknown region, subtract the other regions from (U).
Why this answer is correct
The correct answer is A. (22). The common part is (80-15-25-18=22). For an unknown region, subtract the other regions from (U).
Exam Tip
साझा भाग (80-15-25-18=22) है। अज्ञात क्षेत्र के लिए (U) से बाकी क्षेत्र घटाएं।
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