4. (4 points) What decimal value does the 8-bit binary number 10011110 have if: a) It is interpreted as an unsigned number? b) It is on a computer using signed-magnitude representation? c) It is on a computer using ones complement representation? d) It is on a computer using twos complement representation? 5. (3 points) Given the following two binary numbers: 11111100 and 01110000.- a) Which of these two numbers is the larger unsigned binary number? b) Which of these two is the larger when it is being interpreted on a computer using signed- two's complement representation? c) Which of these two is the smaller when it is being interpreted on a computer using signed- magnitude representation? 6. (3 points) Using a word" of 4 bits, list all of the possible signed binary numbers and their decimal equivalents that are representable in: a) Signed magnitude b) One's complement c) Two's complement