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f(x) = 1/x from N to the non-zero reals is
ANeither one-one nor onto
BOne-one but not onto
CBijective function
DOnto but not one-one
Answer & Solution
Correct answer: B. One-one but not onto
Different naturals give different reciprocals, but a value such as 2 is not 1/n for any natural n.
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