Number of One One and many one functions

Injective function(one-one function) and Many- one function

Define one to one function?

Function|Example|Real Valued Function|One - One And Many - One Function|OMR|Summary

A = {1,2} , the number of one - one functions on A to A is ........

Can there be a one to many functions ?

All one-one function are onto functions

Set A contain 3 elements , set B contain 5 elements , number of one-one function from A to B is "x" and number of one-one functions from A to AxxB is "y" then relation between x and y

What is meant by one-one function?

One-one,many-one, into and onto function