यदि \(U={1,2,3,\ldots,15}\), \(A=\{1,2,3,4,5\}\) और \(B=\{3,5,7,9,11\}\) है, तो \(A^c\cup B^c\) में कितने तत्व होंगे?
If \(U={1,2,3,\ldots,15}\), \(A=\{1,2,3,4,5\}\), and \(B=\{3,5,7,9,11\}\), how many elements are in \(A^c\cup B^c\)?
Explanation opens after your attempt
A. (13)
Concept
(A^c\cup B^c=\(A\cap B\)^c). Since \(A\cap B={3,5}\), the complement has (15-2=13) elements.
Why this answer is correct
The correct answer is A. (13). (A^c\cup B^c=\(A\cap B\)^c). Since \(A\cap B={3,5}\), the complement has (15-2=13) elements.
Exam Tip
(A^c\cup B^c=\(A\cap B\)^c) है। \(A\cap B={3,5}\), इसलिए पूरक में (15-2=13) तत्व होंगे।
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