यदि \(A=\{1,2,3,4\}\), \(B=\{1,2,5\}\) और \(C=\{2,4,5\}\) हैं, तो (|A\times\(B\cap C\)|) क्या होगा?
If \(A=\{1,2,3,4\}\), \(B=\{1,2,5\}\), and \(C=\{2,4,5\}\), what is (|A\times\(B\cap C\)|)?
Explanation opens after your attempt
Correct Answer
B. (8)
Concept
\(B\cap C={2,5}\), so the cardinality is \(4\cdot2=8\). Simplify the intersection first.
Why this answer is correct
The correct answer is B. (8). \(B\cap C={2,5}\), so the cardinality is \(4\cdot2=8\). Simplify the intersection first.
Exam Tip
\(B\cap C={2,5}\), इसलिए कार्डिनलिटी \(4\cdot2=8\) है। प्रतिच्छेद को पहले सरल करना जरूरी है।
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