Set theory and formal languages theory

Notes 13:50 Hexadecimal does not include "10" 43:50 My answer is wrong. I misread the question. Resources: [1] Neso Academy. 2019. Theory of Computation & Automata Theory. Retrieved from https://www.youtube.com/playlist?list=PLBlnK6fEyqRgp46KUv4ZY69yXmpwKOIev [2] Peter Linz. 2006. An introduction to formal languages and automata (5th ed.). Jones & Bartlett Learning, LLC. [3] John C Martin. 2009. Introduction to Languages and The Theory of Computation (4th ed.). McGraw-Hill. [4] Michael Sipser. 2012. Introduction to the Theory of Computation (3rd ed.). Cengage Learning.