यदि \(U={1,2,\ldots,18}\), \(A=\{2,4,6,8,10,12,14,16,18\}\) और \(B=\{1,2,3,5,8,13\}\), तो \(A'\cap B'\) क्या है?
If \(U={1,2,\ldots,18}\), \(A=\{2,4,6,8,10,12,14,16,18\}\), and \(B=\{1,2,3,5,8,13\}\), what is \(A'\cap B'\)?
Explanation opens after your attempt
A. ({7,9,11,15,17})
Concept
(A') is the set of odd numbers, and (1,3,5,13) from (B) are removed. Thus ({7,9,11,15,17}) remains.
Why this answer is correct
The correct answer is A. ({7,9,11,15,17}). (A') is the set of odd numbers, and (1,3,5,13) from (B) are removed. Thus ({7,9,11,15,17}) remains.
Exam Tip
(A') विषम संख्याओं का समुच्चय है और उसमें से (B) के (1,3,5,13) हटेंगे। इसलिए ({7,9,11,15,17}) बचेगा।
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