The Book Class The instance data of the Book class is the book's title and author, stored as strings in variables named title and author. The class should include the following methods: __init__ - The initializer should accept the book's title and author as parameters and store them in the instance variables. __str__ - The string function should return a description of the book in the form 'title by author', such as 'Dune by Frank Herbert'. The Library Class The instance data of the Library class is a list of Book objects called collection (Web-CAT will be doing some testing based on that name). The class should include the following methods: __init__ - The initializer should accept no parameters and simply set up an initially empty collection of books.

Write a program that uses a random number generator to generate a two digit positive integer and allows the user to perform one or more of the following operations: a. double the number. b. reverse the digits of the number. c. raise the number to the power of 2, 3, or 4. d. sum the digits of the number. e. if the number is a two-digit number, then raise the first digit to the power of the second digit. f. if the number is a three-digit number and the last digit is less than or equal to 4, then raise the first two digits to the power of the last digit. after performing an operation if the number is less than 10, add 10 to the number. also, after each operation determine if the number is prime. each successive operation should be performed on the number generated by the last operation. your program should not contain any global variables and each of these operations must be implemented by a separate function. also, your program should be menu driven. 7. (fraction calculator) write a program that

Explain how email technologies enable the exchange of messages between users. find out the typical parts of an email address and explain each part.

You can apply several different worksheet themes from which tab?