A-1) a) 000101 b) sign magnitude : 100110 one's complement: 111001 two's complement: 111010 c) 000100 d) sign magnitude : 100100 one's complement: 111011 two's complement: 111100 e) 001101 f) sign magnitude : 101011 one's complement: 110100 two's complement: 110101 A-2) a) 22 b) 5 c) 6 d) 25 e) 10 f) 16 A-3) sign magnitude one's complement two's complement a) -6 -9 -10 b) 5 5 5 c) 6 6 6 d) -9 -6 -7 e) 10 10 10 f) -0 -15 not a valid binary number for 2's complement A-4) a) difficult arithmetic b) one's complement