यदि \(A\subseteq B\), (n(A)=5), और (n(B)=12), तो (n\(A\cup B\)) क्या है?
If \(A\subseteq B\), (n(A)=5), and (n(B)=12), what is (n\(A\cup B\))?
Explanation opens after your attempt
C. (12)
Concept
When \(A\subseteq B\), \(A\cup B=B\), so the number is (12). In the Venn diagram, the smaller circle is inside the bigger one.
Why this answer is correct
The correct answer is C. (12). When \(A\subseteq B\), \(A\cup B=B\), so the number is (12). In the Venn diagram, the smaller circle is inside the bigger one.
Exam Tip
जब \(A\subseteq B\), तब \(A\cup B=B\), इसलिए संख्या (12) है। वेन आरेख में छोटा वृत्त बड़े के अंदर होता है।
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