यदि \(U=\{1,2,3,4,5,6,7,8,9,10\}\), \(A=\{1,2,3,4\}\) और \(B=\{3,4,5,6\}\) है, तो (\(A\cap B\)') में कितने अवयव हैं?
If \(U=\{1,2,3,4,5,6,7,8,9,10\}\), \(A=\{1,2,3,4\}\), and \(B=\{3,4,5,6\}\), how many elements are in (\(A\cap B\)')?
Explanation opens after your attempt
Correct Answer
A. (8)
Concept
\(A\cap B={3,4}\), so the complement has (10-2=8) elements. Subtract the size of the intersection from the total.
Why this answer is correct
The correct answer is A. (8). \(A\cap B={3,4}\), so the complement has (10-2=8) elements. Subtract the size of the intersection from the total.
Exam Tip
\(A\cap B={3,4}\), इसलिए पूरक में (10-2=8) अवयव होंगे। प्रतिच्छेद की संख्या कुल से घटाएं।
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