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If (R={(a,b):a+b\text{ is a multiple of }5}), which statement is correct based on symmetry?

Answer and explanation

Correct answer: (R) is symmetric because (a+b=b+a)

Step 1: If (a+b) is a multiple of (5), then (b+a) gives the same sum. Step 2: Hence ((b,a)) belongs to the relation whenever ((a,b)) does. Step 3: For sum-multiple conditions, whether the modulus is even or odd does not affect symmetry.

Related tags

RelationsSymmetric RelationMultiple ConditionClass 12Relations And FunctionsMathematicsClass 12 Mcq

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