Consider these functions from the set of students in a discrete mathematics class. Under what conditions is the function one-to-one if it assigns to a student his or her

a) mobile phone number.

b) student identification number.

c) final grade in the class.

d) home town.

Step1

Given that

A functions from the group of students in a discrete mathematics class.

Step2

To find

We have to find conditions is the function one-to-one if it assigns to a student his or her?

Step3

One -to -One :- A function for which every element of the range of the function corresponds to exactly one element of the domain. We can write one-to-one as 1-1.

a) mobile phone number.

The function is one-to-one if it assigns to a student his or her mobile phone number.

Condition:- Nobody has similar number.

Step4

b) student identification number.

The...