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Class 12 Relations And Functions · Assertion Reason1 Markstypes_of_functions

Class 12 Maths · Relations And Functions · Assertion Reason #149

Assertion: An onto map from \(\{1,2,3\}\) to itself must be one-one. Reason: Between finite sets of equal size, a function is injective if and only if it is surjective.

✅ Step-by-Step Solution

Final Answer: Option (A): Both A and R are true, and R correctly explains A.
  1. The finite-set equivalence directly proves the assertion.

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