Assignment:
Q1) How many different ways can a teacher select 2 books from a possible 17 books?
Q2) How many different ways can be made from a test bank of 20 questions if the test consists of 5 questions?
Q3) How many different ways can 4 tickets be selected from 50 tickets if each tickets wins a different prize?
Provide complete and step by step solution for the question and show calculations and use formulas.