This course will frequently use hexadecimal notation, and this question will ask for practicing (reviewing) use of hexadecimal notation. a. How many bits are represented by each digit in a hexadecimal number? b. What is representation of the decimal value 25 in hexadecimal number system? c. How many different values can be represented by a single hexadecimal digit? d. For the following hexadecimal number: 0x51a7b47a i. How many bits are represented by this number? ii. What are the first 8 bits, written in hexadecimal? iii. What are the first 12 bits, written in binary? iv. What are the last 8 bits, written in decimal?