यदि \(A=\{1,2\}\) और \(B=\{3,4,5\}\), तो \(A\times B\) में कितने अवयव हैं?
If \(A=\{1,2\}\) and \(B=\{3,4,5\}\), how many elements are in \(A\times B\)?
Explanation opens after your attempt
Correct Answer
B. (6)
Concept
\(|A\times B|=|A|\cdot |B|=2\cdot3=6\). In exams, multiply for Cartesian product, do not add.
Why this answer is correct
The correct answer is B. (6). \(|A\times B|=|A|\cdot |B|=2\cdot3=6\). In exams, multiply for Cartesian product, do not add.
Exam Tip
\(|A\times B|=|A|\cdot |B|=2\cdot3=6\)। परीक्षा में Cartesian product में गुणा करें, जोड़ नहीं।
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