यदि \(A=\{1,2,3\}\) और \(R={(a,b):a+b\) is odd(}) है, तो कौन-सा pair (R) में नहीं है?

If \(A=\{1,2,3\}\) and \(R={(a,b):a+b\) is odd(}), which pair is not in (R)?

Explanation opens after your attempt
Correct Answer

C. ( (1,3) )

Step 1

Concept

Since (1+3=4) is even, ( (1,3) ) is not in the odd-sum relation. Always check the parity of the sum.

Step 2

Why this answer is correct

The correct answer is C. ( (1,3) ). Since (1+3=4) is even, ( (1,3) ) is not in the odd-sum relation. Always check the parity of the sum.

Step 3

Exam Tip

(1+3=4) सम है, इसलिए ( (1,3) ) odd-sum relation में नहीं है। sum की parity जरूर जांचें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3\}\) और \(R={(a,b):a+b\) is odd(}) है, तो कौन-सा pair (R) में नहीं है? / If \(A=\{1,2,3\}\) and \(R={(a,b):a+b\) is odd(}), which pair is not in (R)?

Correct Answer: C. ( (1,3) ). Explanation: (1+3=4) सम है, इसलिए ( (1,3) ) odd-sum relation में नहीं है। sum की parity जरूर जांचें। / Since (1+3=4) is even, ( (1,3) ) is not in the odd-sum relation. Always check the parity of the sum.

Which concept should I revise for this Mathematics MCQ?

Since (1+3=4) is even, ( (1,3) ) is not in the odd-sum relation. Always check the parity of the sum.

What exam hint can help solve this Mathematics question?

(1+3=4) सम है, इसलिए ( (1,3) ) odd-sum relation में नहीं है। sum की parity जरूर जांचें।