यदि \(A'\cap B'=U\), तो \(A\cup B\) के बारे में सही निष्कर्ष क्या है?
If \(A'\cap B'=U\), what is the correct conclusion about \(A\cup B\)?
Explanation opens after your attempt
Correct Answer
A. \(A\cup B=\varnothing\)
Concept
(A'\cap B'=\(A\cup B\)'). If this is (U), the complement of \(A\cup B\) is (U), so \(A\cup B=\varnothing\).
Why this answer is correct
The correct answer is A. \(A\cup B=\varnothing\). (A'\cap B'=\(A\cup B\)'). If this is (U), the complement of \(A\cup B\) is (U), so \(A\cup B=\varnothing\).
Exam Tip
(A'\cap B'=\(A\cup B\)') है। यदि यह (U) है, तो \(A\cup B\) का पूरक (U) है, इसलिए \(A\cup B=\varnothing\)।
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