સંબંધ \(R=\{(x, y): x, y \in \mathbb{Z}\) અને \(x+y\) યુગ્મ છે \(\}\) તે ___ છે.

A સ્વવાચક અને સંમિત છે પરંતુ પરંપરિત નથી
B સામ્ય સંબંધ
C સંમિત અને પરંપરિત છે પરંતુ સ્વવાચક નથી
D સ્વવાચક અને પરંપરિત છે પરંતુ સંમિત નથી

Verified Solution

Answer & Solution

Correct Answer

(B) સામ્ય સંબંધ

Step-by-step Solution

Detailed explanation

For reflexive \((x, x) \in \mathbb{R}, x \in \mathbb{Z}\) \(\Rightarrow x+x=2 x \rightarrow \text { even }\) For symmetric of \((x, y) \in \mathbb{R}\) then \((y, x) \in \mathbb{R}\) when \(x, y \in \mathbb{Z}\) \(x+y \rightarrow\) even…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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