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If (f:A\to B) is onto, what is true for every element of (B)?

Answer and explanation

Correct answer: It has at least one preimage in (A)

Step 1: In an onto function, no element of the codomain is left out. Step 2: Therefore each element of (B) is reached by at least one element of (A). Step 3: This is the main idea of onto.

Related tags

Onto FunctionPreimageCodomainSurjectiveFunctionsRelations And FunctionsMathematicsClass 12 Mcq

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