यदि \(A\subseteq B\subseteq C\subseteq U\), तो कौन सा संबंध हमेशा सत्य है?
If \(A\subseteq B\subseteq C\subseteq U\), which relation is always true?
Explanation opens after your attempt
Correct Answer
A. \(C'\subseteq B'\subseteq A'\)
Concept
Taking complements reverses inclusion. Hence \(A\subseteq B\subseteq C\) gives \(C'\subseteq B'\subseteq A'\).
Why this answer is correct
The correct answer is A. \(C'\subseteq B'\subseteq A'\). Taking complements reverses inclusion. Hence \(A\subseteq B\subseteq C\) gives \(C'\subseteq B'\subseteq A'\).
Exam Tip
पूरक लेने पर समावेशन की दिशा उलट जाती है। इसलिए \(A\subseteq B\subseteq C\) से \(C'\subseteq B'\subseteq A'\) मिलता है।
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