यदि \(U=\{1,2,3,4,5,6,7,8\}\) और \(A=\{1,2,7,8\}\) है, तो \(A'\cup A\) कौन सा है?
If \(U=\{1,2,3,4,5,6,7,8\}\) and \(A=\{1,2,7,8\}\), which is \(A'\cup A\)?
Explanation opens after your attempt
Correct Answer
A. ({1,2,3,4,5,6,7,8})
Concept
\(A'\cup A=U\), so the answer is the whole universal set. Identify (U) in list form among the options.
Why this answer is correct
The correct answer is A. ({1,2,3,4,5,6,7,8}). \(A'\cup A=U\), so the answer is the whole universal set. Identify (U) in list form among the options.
Exam Tip
\(A'\cup A=U\), इसलिए उत्तर पूरा सार्वत्रिक समुच्चय है। विकल्पों में (U) को सूची रूप में पहचानें।
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