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On natural numbers, (aRb) if and only if (a) and (b) have the same product of digits. Which number belongs to the equivalence class of (23)?

Answer and explanation

Correct answer: (16)

Step 1: The product of digits of (23) is (2\cdot 3=6). Step 2: The product of digits of (16) is (1\cdot 6=6). Step 3: Since the digit product is the same, (16) lies in the same equivalence class.

Related tags

Digit ProductNatural NumbersEquivalence ClassClassificationEquivalence RelationRelations And FunctionsMathematicsClass 12 Mcq

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