Question

How many one-to-one functions are there from a set with two elements to a set with one elements? monitor

Answer 1

0

Explanation:

ONE TO ONE FUNCTION : It is the function in which each element of the range of the function is connected with one element of the domain

Now let the set which contain 2 elements are m and the set which contain one element is n

For existence of one-to-one function there should be n\geq m . but here in m there are 2 elements and n there is 1 element so one-to-one function will not be defined

So 0 one-to-one function are formed