यदि \(A=\{1,2,3,4\}\) और \(R=\{(a,b):a+b=7\}\) है, तो कौन-सा pair (R) में है?

If \(A=\{1,2,3,4\}\) and \(R=\{(a,b):a+b=7\}\), which pair is in (R)?

Explanation opens after your attempt
Correct Answer

B. ( (3,4) )

Step 1

Concept

Since (3+4=7), \((3,4)\in R\). In such questions, test the pair in the condition.

Step 2

Why this answer is correct

The correct answer is B. ( (3,4) ). Since (3+4=7), \((3,4)\in R\). In such questions, test the pair in the condition.

Step 3

Exam Tip

क्योंकि (3+4=7), इसलिए \((3,4)\in R\) है। ऐसे प्रश्नों में pair को condition में रखकर जांचें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3,4\}\) और \(R=\{(a,b):a+b=7\}\) है, तो कौन-सा pair (R) में है? / If \(A=\{1,2,3,4\}\) and \(R=\{(a,b):a+b=7\}\), which pair is in (R)?

Correct Answer: B. ( (3,4) ). Explanation: क्योंकि (3+4=7), इसलिए \((3,4)\in R\) है। ऐसे प्रश्नों में pair को condition में रखकर जांचें। / Since (3+4=7), \((3,4)\in R\). In such questions, test the pair in the condition.

Which concept should I revise for this Mathematics MCQ?

Since (3+4=7), \((3,4)\in R\). In such questions, test the pair in the condition.

What exam hint can help solve this Mathematics question?

क्योंकि (3+4=7), इसलिए \((3,4)\in R\) है। ऐसे प्रश्नों में pair को condition में रखकर जांचें।