Is it necessary that all the values of the domain of a function should get mapped with its range? Answer in Yes/No.

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Solution

For a possible function, every value of the domain must get mapped with its range.

For example, the relation indicated by the following mapping diagram is a function.

However, the following mapping is not a function as one domain value is unmapped.

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Similar questions

Statement: Is it necessary that education should be job oriented?

Arguments:

I. Yes, the aim of education is to prepare persons for earning.

II. Yes, educated person should stand on his feet after completion of education.

III. No, education should be for sake of knowledge only.

IV. No, one may take up agriculture where education is not necessary.

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