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NDA 2014
Exam
NDA
Year
2014
Subject
Mathematics
Chapter
Functions

NDA 2014 · Mathematics · Functions

Let N denote the set of all non-negative integers and Z denote the...

Let N denote the set of all non-negative integers and Z denote the set of all integers. The function f:Z→Nf: \mathrm{Z} \rightarrow \mathrm{N} given by f(x)=∣x∣f(x)=|x| is:

Options

  1. AOne-one but not onto
  2. BOnto but not one-one
  3. CBoth one-one and onto
  4. DNeither one-one nor onto

Correct answer

B. Onto but not one-one

Step-by-step solution

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