Please anybody answers it??

QUESTION 3 a) Convert the two's complement 1110001011012 to a decimal number. (2 marks) b) Differentiate between 4-bit parallel adder circuit and 4-bit subtractor circuit. (3 marks) c) Determine the range of integers for 6-bit two's complement number. (2 marks) d) Add-5810 to +3210 using 8-bit two's complement number system. (3 marks) e) Draw a 4-bit subtractor circuit. (4 marks)