I have a few answers but im not entirely sure so i dont mind being corrected

2. What decimal value does the 8-bit binary number 10101110 have if: a) it is interpreted as an unsigned number? 174 b) it is on a computer using signed-magnitude representation? c) it is on a computer using one's complement representation? 81 d) it is on a computer using two's complement representation? 82 e) it is on a computer using excess- 127 representation