Problem
1. One bit can represent 0 or 1. With two bits you have four possible combinations 00, 01, 10, and 11. How many different combinations can you make with four bits or eight bits (one byte)? Each combination can be used to represent a binary number. How many numbers can you represent with 2 bytes (16 bits)? How many numbers can you represent with four bytes?
2. Microsoft Word used to use an encoding of a word-processing document called "DOC." Most recent versions of Microsoft Word use a different encoding called "DOCX." What's the difference between them?