we have represented numbers in base-2 (binary) and in base-16 (hex). we are now ready for unsigned base-4, which we will call quad numbers. a quad digit can be 0, 1, 2, or 3. a. what is the maximum unsigned decimal value that one can represent with 3 quad digits? b. what is the maximum unsigned decimal value that one can represent with n quad digits? (hint: your answer should be a function of n.) c. add the two unsigned quad numbers: 023 and 221. d. what is the quad representation of the decimal number 42? e. what is the binary representation of the unsigned quad number 123.3? f. express the unsigned quad number 123.3 in ieee floating point format. g. given a black box that takes m quad digits as input and produces one quad digit for output, what is the maximu