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Let A = {0, 1} and N be the set of natural numbers. Then the mapping f: N → A defined by f(2n – 1) = 0, f(2n) = 1, ∀ n ∈ N, is onto.

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Question

Let A = {0, 1} and N be the set of natural numbers. Then the mapping f: N → A defined by f(2n – 1) = 0, f(2n) = 1, ∀ n ∈ N, is onto.

Options

  • True

  • False

MCQ
True or False
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Solution

This statement is True.

Explanation:

Given, A = {0, 1}

 f(2n – 1) = 0, f(2n) = 1, ∀ n ∈ N

Thus range of f is {0, 1}

So, the mapping f: N → A is onto.

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Chapter 1: Relations And Functions - Exercise [Page 17]

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NCERT Exemplar Mathematics Exemplar [English] Class 12
Chapter 1 Relations And Functions
Exercise | Q 57 | Page 17

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