यदि \(A=\{5,10\}\) और \(B=\varnothing\) हैं, तो \(A\times B\) क्या होगा?
If \(A=\{5,10\}\) and \(B=\varnothing\), what is \(A\times B\)?
Explanation opens after your attempt
Correct Answer
C. \(\varnothing\)
Concept
The second component must come from (B), but \(B=\varnothing\). Hence no ordered pair is formed and the product is \(\varnothing\).
Why this answer is correct
The correct answer is C. \(\varnothing\). The second component must come from (B), but \(B=\varnothing\). Hence no ordered pair is formed and the product is \(\varnothing\).
Exam Tip
दूसरा घटक (B) से लेना होता है पर \(B=\varnothing\) है। इसलिए कोई क्रमित युग्म नहीं बनेगा और गुणन \(\varnothing\) होगा।
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