यदि \(A={x:x\in\mathbb{N},3\le x\le8}\) और \(B={y:y\in\mathbb{N},y\le4}\) हैं, तो \(|A\times B|\) क्या है?
If \(A={x:x\in\mathbb{N},3\le x\le8}\) and \(B={y:y\in\mathbb{N},y\le4}\), what is \(|A\times B|\)?
Explanation opens after your attempt
Correct Answer
C. (24)
Concept
Here (|A|=6) and (|B|=4), so \(|A\times B|=6\cdot4=24\). Count the elements first.
Why this answer is correct
The correct answer is C. (24). Here (|A|=6) and (|B|=4), so \(|A\times B|=6\cdot4=24\). Count the elements first.
Exam Tip
यहाँ (|A|=6) और (|B|=4), इसलिए \(|A\times B|=6\cdot4=24\)। पहले समुच्चयों के अवयव गिनें।
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