यदि \(A=\{0,1,2,3\}\) और \(B=\{0,1,2\}\), तो \(A\times B\) में कितने युग्म ((a,b)) ऐसे हैं जिनमें (a+b) विषम है?
If \(A=\{0,1,2,3\}\) and \(B=\{0,1,2\}\), how many pairs ((a,b)) in \(A\times B\) have (a+b) odd?
Explanation opens after your attempt
C. (6)
Concept
The sum is odd when one component is even and the other is odd. The count is \(2\cdot1+2\cdot2=6\).
Why this answer is correct
The correct answer is C. (6). The sum is odd when one component is even and the other is odd. The count is \(2\cdot1+2\cdot2=6\).
Exam Tip
योग विषम तब होता है जब एक अवयव सम और दूसरा विषम हो। गिनती \(2\cdot1+2\cdot2=6\) है।
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