19. The following 16-bit hexadecimal numbers represent signed integers. Convert to decimal. 7CAB = C123 = 20. The following 16-bit hexadecimal numbers represent signed integers. Convert to decimal. 7F9B = 8230 = 21. What is the decimal representation of the following signed binary numbers? 10110101 = 00101010 = 11110000 = 22. What is the decimal representation of the following signed binary numbers? 10000000 = 11001100 = 10110111 23. What is the 8-bit binary (two's-complement) representation of each of the following signed decimal integers? 5 = 36 = -16 = 24. What is the 8-bit binary (two's-complement) representation of each of the following signed decimal integers? -72 = -98 = -26 =