यदि \(A=\{1,2,3,4\}\) और \(R=\{(1,1),(2,2),(3,3)\}\) है, तो (R) स्वपरावर्ती क्यों नहीं है?

If \(A=\{1,2,3,4\}\) and \(R=\{(1,1),(2,2),(3,3)\}\), why is (R) not reflexive?

Explanation opens after your attempt
Correct Answer

B. क्योंकि ( (4,4) ) नहीं हैbecause ( (4,4) ) is absent

Step 1

Concept

For reflexivity, \((a,a)\in R\) is needed for every \(a\in A\). Here ( (4,4) ) is missing.

Step 2

Why this answer is correct

The correct answer is B. क्योंकि ( (4,4) ) नहीं है / because ( (4,4) ) is absent. For reflexivity, \((a,a)\in R\) is needed for every \(a\in A\). Here ( (4,4) ) is missing.

Step 3

Exam Tip

स्वपरावर्ती होने के लिए हर \(a\in A\) के लिए \((a,a)\in R\) चाहिए। यहाँ ( (4,4) ) missing है।

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Mathematics Answer, Explanation and Revision Hints

यदि \(A=\{1,2,3,4\}\) और \(R=\{(1,1),(2,2),(3,3)\}\) है, तो (R) स्वपरावर्ती क्यों नहीं है? / If \(A=\{1,2,3,4\}\) and \(R=\{(1,1),(2,2),(3,3)\}\), why is (R) not reflexive?

Correct Answer: B. क्योंकि ( (4,4) ) नहीं है / because ( (4,4) ) is absent. Explanation: स्वपरावर्ती होने के लिए हर \(a\in A\) के लिए \((a,a)\in R\) चाहिए। यहाँ ( (4,4) ) missing है। / For reflexivity, \((a,a)\in R\) is needed for every \(a\in A\). Here ( (4,4) ) is missing.

Which concept should I revise for this Mathematics MCQ?

For reflexivity, \((a,a)\in R\) is needed for every \(a\in A\). Here ( (4,4) ) is missing.

What exam hint can help solve this Mathematics question?

स्वपरावर्ती होने के लिए हर \(a\in A\) के लिए \((a,a)\in R\) चाहिए। यहाँ ( (4,4) ) missing है।