Can you please help on number 1 and 2?

In mathematics and computer science, a set is a collection in which order does not matter and there are no duplicates. in this problem, we are going to to define a class which wil allow us to create an object to represent a set of integers. you will write a program set. java to define the class set. each instance of the class set will be an object representing a set of integers.

Select the correct answer. a company wants to use online methods to target more customers. it decides to conduct a market research by collecting the data of a few customers with their consent. they want to track data of the sites that their customers frequently visit. which software can the company? a. spyware b. bots c. adware d. trojan horse e. rootkits

What software programs are used to to create professional publication? a.) graphics programs b.) word processors c.) page layout programs d.) spreadsheet programs