यदि (n(B-A)=13) और (n\(A\cap B\)=6), तो (n(B)) क्या है?
If (n(B-A)=13) and (n\(A\cap B\)=6), what is (n(B))?
Explanation opens after your attempt
C. (19)
Concept
Set (B) contains only (B) and the common part. Therefore, (n(B)=13+6=19).
Why this answer is correct
The correct answer is C. (19). Set (B) contains only (B) and the common part. Therefore, (n(B)=13+6=19).
Exam Tip
(B) में केवल (B) और साझा भाग होते हैं। इसलिए (n(B)=13+6=19)।
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