True or False: The function $f$ has an inverse: $f:{1,2,3,4,}\to{10}$ with $f={(1,10),(2,10),(3,10),(4,10)}$

related to an answer for: State with reason whether following functions have inverses: (i) $f: \{ 1,2,3,4,\} \to \{10\}$ with $f= \{(1,10),(2,10),(3,10), (4,10)\}$

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