यदि \(A=\{1,2,3,4\}\) और \(R=\{(a,b):a+b\leq 5\}\) हो तो कौन सा युग्म (R) में नहीं है?

If \(A=\{1,2,3,4\}\) and \(R=\{(a,b):a+b\leq 5\}\), which pair is not in (R)?

Explanation opens after your attempt
Correct Answer

D. \((4,4)\)

Step 1

Concept

Since (4+4=8) and \(8\leq 5\) is false, \((4,4)\notin R\). For boundary conditions, also check equality.

Step 2

Why this answer is correct

The correct answer is D. \((4,4)\). Since (4+4=8) and \(8\leq 5\) is false, \((4,4)\notin R\). For boundary conditions, also check equality.

Step 3

Exam Tip

(4+4=8) और \(8\leq 5\) असत्य है इसलिए \((4,4)\notin R\)। सीमा वाली शर्त में बराबरी भी जांचें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3,4\}\) और \(R=\{(a,b):a+b\leq 5\}\) हो तो कौन सा युग्म (R) में नहीं है? / If \(A=\{1,2,3,4\}\) and \(R=\{(a,b):a+b\leq 5\}\), which pair is not in (R)?

Correct Answer: D. \((4,4)\). Explanation: (4+4=8) और \(8\leq 5\) असत्य है इसलिए \((4,4)\notin R\)। सीमा वाली शर्त में बराबरी भी जांचें। / Since (4+4=8) and \(8\leq 5\) is false, \((4,4)\notin R\). For boundary conditions, also check equality.

Which concept should I revise for this Mathematics MCQ?

Since (4+4=8) and \(8\leq 5\) is false, \((4,4)\notin R\). For boundary conditions, also check equality.

What exam hint can help solve this Mathematics question?

(4+4=8) और \(8\leq 5\) असत्य है इसलिए \((4,4)\notin R\)। सीमा वाली शर्त में बराबरी भी जांचें।