# What is One One & Onto Function? – Chapter 1

One-One and Onto Function:

A Function from A to B is both one to one and onto when no element of b is the image of more than one element of A and all the element of B are in used

Let A = {1, 2, 3}

Let F = {(1, 3), (2, 1), (3, 2)}

Function F is one-one and onto function because domain get their own range (range is not shared) and all the elements of B are present in function ( f ).

For Chapter 1 – Exercise 1.3 Q 16 Click here or for Chapter 1 – Exersice 1.3 – Q 17 part 1 & 2 Click Here

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