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If (|A|=5) and (|B|=3), which statement is correct for functions from (A) to (B)?

Answer and explanation

Correct answer: One-one function is impossible but onto function is possible

Step 1: (A) has (5) elements and (B) has (3), so it is impossible to assign distinct images to all (5) elements. Step 2: But it is possible to cover all (3) elements of (B) using (5) elements of (A). Step 3: For finite sets, first compare cardinalities.

Related tags

FunctionsFinite-SetOne-OneOntoCardinalityRelations And FunctionsMathematicsClass 12 Mcq

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