The following describes a function that must be invertible: N(p)is the number of words on page p of a science fiction novel.

Question

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For a function to be invertible, each input must map to a unique output. The function N(p), which counts the number of words on page p, could map multiple pages (different inputs) to the same number of words (the same output), making it not necessarily invertible.

The Following Describes a Function That Must Be Invertible: N(p)is