\(यदि (R={(x,y):x+y\) विषम है}) है, तो कौन-सा pair (R) में नहीं है?

\(If (R={(x,y):x+y\) is odd}), which pair is not in (R)?

Explanation opens after your attempt
Correct Answer

D. ( (4,8) )

Step 1

Concept

Since (4+8=12) is even, it will not belong to the odd-sum relation. For an odd sum, one number should be even and the other odd.

Step 2

Why this answer is correct

The correct answer is D. ( (4,8) ). Since (4+8=12) is even, it will not belong to the odd-sum relation. For an odd sum, one number should be even and the other odd.

Step 3

Exam Tip

(4+8=12) सम है, इसलिए यह odd-sum relation में नहीं आएगा। विषम योग के लिए एक संख्या सम और दूसरी विषम होनी चाहिए।

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Mathematics Answer, Explanation and Revision Hints

\(यदि (R={(x,y):x+y\) विषम है}) है, तो कौन-सा pair (R) में नहीं है? \(/ If (R={(x,y):x+y\) is odd}), which pair is not in (R)?

Correct Answer: D. ( (4,8) ). Explanation: (4+8=12) सम है, इसलिए यह odd-sum relation में नहीं आएगा। विषम योग के लिए एक संख्या सम और दूसरी विषम होनी चाहिए। / Since (4+8=12) is even, it will not belong to the odd-sum relation. For an odd sum, one number should be even and the other odd.

Which concept should I revise for this Mathematics MCQ?

Since (4+8=12) is even, it will not belong to the odd-sum relation. For an odd sum, one number should be even and the other odd.

What exam hint can help solve this Mathematics question?

(4+8=12) सम है, इसलिए यह odd-sum relation में नहीं आएगा। विषम योग के लिए एक संख्या सम और दूसरी विषम होनी चाहिए।