Q1. Determine the decimal values of the following unsigned numbers - a. (0111001010)2; b. (1011001001)2 ; c. (4351)8 ; d. (1001)8 ; e. (ABCD)16 Q2. Determine the decimal values of the following 8-bit, 2's complement numbers - a. (11001101)2 b. (11110000)2 c. (11111111)2 d. (01100111)2; e. (10101010)2 Q3. Convert the decimal numbers: 83, 194, -29, -1328, -2 into signed 12-bit numbers in 2's complement. Q4. Perform the following operations involving eight-bit, 2's complement binary numbers and indicate whether arithmetic overflow occurs. a. (00110110)+(01000101); b. (01110101)+(11011110); c. (11011111)(10111000) d. (00110110)(00101011); e. (01110101)(11010110)