यदि (n(A-B)=6), (n\(A\cap B\)=5), और (n(B-A)=4), तो (n\(A\cup B\)) क्या है?
If (n(A-B)=6), (n\(A\cap B\)=5), and (n(B-A)=4), what is (n\(A\cup B\))?
Explanation opens after your attempt
C. (15)
Concept
The union includes all three regions, so (6+5+4=15). In a Venn diagram, do not add the overlap twice.
Why this answer is correct
The correct answer is C. (15). The union includes all three regions, so (6+5+4=15). In a Venn diagram, do not add the overlap twice.
Exam Tip
संघ में तीनों क्षेत्र आते हैं, इसलिए (6+5+4=15)। वेन आरेख में ओवरलैप को दो बार न जोड़ें।
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