यदि \(A\subseteq U\), तो \(A\cup A'\) और \(A\cap A'\) क्रमशः क्या हैं?
If \(A\subseteq U\), what are \(A\cup A'\) and \(A\cap A'\) respectively?
Explanation opens after your attempt
A. \(U,\varnothing\)
Concept
(A) and (A') together make the whole (U), and their common part is empty. This is the paired identity of complement.
Why this answer is correct
The correct answer is A. \(U,\varnothing\). (A) and (A') together make the whole (U), and their common part is empty. This is the paired identity of complement.
Exam Tip
(A) और (A') मिलकर पूरा (U) बनाते हैं तथा उनका साझा भाग रिक्त होता है। यह पूरक की जोड़ी पहचान है।
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