यदि \(A\subseteq B\) और \(B\subseteq U\), तो \(B'\subseteq A'\) क्यों सत्य है?
If \(A\subseteq B\) and \(B\subseteq U\), why is \(B'\subseteq A'\) true?
Explanation opens after your attempt
Correct Answer
A. बड़ा समुच्चय छोटा पूरक देता हैA larger set gives a smaller complement
Concept
When \(A\subseteq B\), everything outside (B) is also outside (A). Inclusion reverses under complement.
Why this answer is correct
The correct answer is A. बड़ा समुच्चय छोटा पूरक देता है / A larger set gives a smaller complement. When \(A\subseteq B\), everything outside (B) is also outside (A). Inclusion reverses under complement.
Exam Tip
जब \(A\subseteq B\), तो (B) के बाहर की हर वस्तु (A) के बाहर भी होगी। पूरक लेने पर समावेशन उलट जाता है।
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