Class 12 Mathematics - Relations and Functions - Functions Expert Quiz

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समुच्चय \(A=\{1,2,3\}\) पर संबंध \(R=\{(1,1),(1,2),(2,1),(2,3),(3,2)\}\) दिया है। यह संबंध किस कारण सममित है?

On the set \(A=\{1,2,3\}\), the relation \(R=\{(1,1),(1,2),(2,1),(2,3),(3,2)\}\) is given. Why is this relation symmetric?

Explanation opens after your attempt
Correct Answer

A. हर युग्म का उल्टा युग्म भी संबंध में हैThe reverse pair of every pair is also in the relation

Step 1

Concept

In a symmetric relation, if \((a,b) \in R\), then \((b,a) \in R\) must also be present.

Step 2

Why this answer is correct

Here ((1,2)) has ((2,1)), and ((2,3)) has ((3,2)).

Step 3

Exam Tip

In exams, always check reverse pairs for pairs with different elements. चरण 1: सममित संबंध में यदि \((a,b) \in R\), तो \((b,a) \in R\) भी होना चाहिए। चरण 2: यहाँ ((1,2)) के साथ ((2,1)) और ((2,3)) के साथ ((3,2)) मौजूद हैं। चरण 3: परीक्षा में हर अलग-अलग तत्वों वाले युग्म का उल्टा युग्म जरूर जाँचें।

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