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If (A) has (3) elements and (B) has (2) elements, choose the number of onto functions from (A) to (B).

Answer and explanation

Correct answer: (6)

Step 1: Total functions are (2^3=8). Step 2: The non-onto functions are the (2) constant functions. Step 3: Onto functions are (8-2=6); for small sets, subtract the missed cases.

Related tags

Surjection CountingFinite Set McqClass 12Reflexive RelationRelations And FunctionsMathematicsClass 12 Mcq

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