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# Solution - Let A = {1, 2, 3,......, 9} and R be the relation in A × A defined by (a, b) R (c, d) if a + d = b + c for (a, b), (c, d) in A × A. Prove that R is an equivalence relation. Also, obtain the equivalence class [(2, 5)]. - Types of Relations

#### Question

Let A = {1, 2, 3,......, 9} and R be the relation in A × A defined by (a, b) R (c, d) if a + d = b + c for (a, b), (c, d) in A × A. Prove that R is an equivalence relation. Also, obtain the equivalence class [(2, 5)].

#### Solution

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#### APPEARS IN

2013-2014 (March) Delhi Set 1
Question 11 | 4 marks

#### Reference Material

Solution for question: Let A = {1, 2, 3,......, 9} and R be the relation in A × A defined by (a, b) R (c, d) if a + d = b + c for (a, b), (c, d) in A × A. Prove that R is an equivalence relation. Also, obtain the equivalence class [(2, 5)]. concept: Types of Relations. For the courses CBSE (Arts), CBSE (Commerce), CBSE (Science), PUC Karnataka Science
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