\(\newcommand{\twoline}[2]{\begin{pmatrix}#1 \\ #2 \end{pmatrix}}\newcommand{\amp}{&}\)
The following functions all have domain and codomain For each, determine whether it is (only) injective, (only) surjective, bijective, or neither injective nor surjective.
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- gives the number of letters in the English word for the number For example, since “one” contains three letters.