5.a. Az is the sum of two binary numbers 0011 1101 and 0101 0111. Find Az. (The subscript 2 means base 2.)
5.b. B is the difference of two binary numbers 0011 1101 and 0101 0111. That is, B = 0011 1101 - 0101 0111. Use 2's complement operation to find B2.
5.c. Perform octal number addition and find Cs = 234 + 345.
5.d. Express the decimal number 478 as a hexadecimal number D. Show your step.