Question: If f : N N is defined by f(n) = n - (-1), then (A) fis one-one but not onto (B) fis both one-one

If f : N N is defined by f(n) = n -

If f : N N is defined by f(n) = n - (-1)", then (A) fis one-one but not onto (B) fis both one-one and onto (C) fis neither one-one nor onto (D) fis onto but not one-one

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