यदि \(A=\{1,2,3\}\), \(B=\{2,3,4\}\), \(C=\{3,4,5\}\) हैं, तो (|A\times\(B\cap C\)|) क्या है?
If \(A=\{1,2,3\}\), \(B=\{2,3,4\}\), \(C=\{3,4,5\}\), what is (|A\times\(B\cap C\)|)?
Explanation opens after your attempt
Correct Answer
B. (6)
Concept
\(B\cap C={3,4}\), so (|A\times\(B\cap C\)|=3\cdot2=6). Multiply only after finding the intersection.
Why this answer is correct
The correct answer is B. (6). \(B\cap C={3,4}\), so (|A\times\(B\cap C\)|=3\cdot2=6). Multiply only after finding the intersection.
Exam Tip
\(B\cap C={3,4}\), इसलिए (|A\times\(B\cap C\)|=3\cdot2=6)। प्रतिच्छेद के बाद ही गुणा करें।
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