please solve all of them. Thanks in advance

3. Convert the following hexadecimal representations of 2's complement binary numbers to decimal numbers a. OxFO b. Ox7FF C. 0x16 d. Ox8000 Convert the following decimal numbers to hexadecimal representations of 2's complement numbers 4. a. 256 c. 123456789 d. -44 5. Perform the following logical operations. Express your answers in hexadecimal notations a. 0x5478 AND OxFDEA b. OxABCD OR 0x1234 c. NOT( (NOT(OxDEFA)) AND (NOT(OxFFFF)) ) d. Ox00FF XOR 0x325C We have represented numbers in base-2 (binary) and in base-16 (hex). We are now ready for unsigned base-4, which we call quad numbers. A quad digit can be 0,1, 2, or 3 6. What is the maximum unsigned decimal value that one can represent with 3 quad digits? What is the maximum unsigned decimal value that one can represent with n quad digits (Hint: your answer should be a function of n )? Add the two unsigned quad numbers: 023 and 221? What is the quad representation of decimal number 42? a. b. c. d