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On natural numbers, (aRb) if and only if (a) and (b) have the same number of digits. What forms the equivalence class of (125)?

Answer and explanation

Correct answer: All three-digit natural numbers

Step 1: (125) has (3) digits. Step 2: The relation checks only the number of digits, not the actual value. Step 3: Therefore the class of (125) consists of all three-digit natural numbers.

Related tags

Number Of DigitsNatural NumbersEquivalence ClassClassificationEquivalence RelationRelations And FunctionsMathematicsClass 12 Mcq

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