fun-lim

Question: If for two functions $g$ and $f$, $gof$ is both injective and surjective, then which of the following is true



1) $g$ and $f$ should be injective and surjective
2) $g$ should be injective and surjective
3) $f$ should be injective and surjective
4) None of them may be surjective and injective
Solution: Explanation: No Explanation
Functions

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