यदि \(A\subseteq B\), (n(A)=4), और (n(B)=10), तो (n\(A\cap B\)) क्या है?
If \(A\subseteq B\), (n(A)=4), and (n(B)=10), what is (n\(A\cap B\))?
Explanation opens after your attempt
A. (4)
Concept
When \(A\subseteq B\), \(A\cap B=A\), so the number is (4). The entire inner set becomes the common part.
Why this answer is correct
The correct answer is A. (4). When \(A\subseteq B\), \(A\cap B=A\), so the number is (4). The entire inner set becomes the common part.
Exam Tip
जब \(A\subseteq B\), तब \(A\cap B=A\), इसलिए संख्या (4) है। अंदर वाला पूरा समुच्चय साझा भाग बनता है।
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