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
Correct Answer

C. (6)

Step 1

Concept

The sum is odd when one component is even and the other is odd. The count is \(2\cdot1+2\cdot2=6\).

Step 2

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 \(2\cdot1+2\cdot2=6\).

Step 3

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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Mathematics Answer, Explanation and Revision Hints

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?

Correct Answer: C. (6). Explanation: योग विषम तब होता है जब एक अवयव सम और दूसरा विषम हो। गिनती \(2\cdot1+2\cdot2=6\) है। / The sum is odd when one component is even and the other is odd. The count is \(2\cdot1+2\cdot2=6\).

Which concept should I revise for this Mathematics MCQ?

The sum is odd when one component is even and the other is odd. The count is \(2\cdot1+2\cdot2=6\).

What exam hint can help solve this Mathematics question?

योग विषम तब होता है जब एक अवयव सम और दूसरा विषम हो। गिनती \(2\cdot1+2\cdot2=6\) है।