Consider a 16-bit 2's complement representation (a). What is the largest (most positive) value and the smallest (most negative) value in this representation scheme? (b). Write down the bit-pattern repre- senting 18,18,25, and 25, respectively. (c). What are the value of above bit pattern if they are treated as unsigned numbers? (d). Add the bit patterns together for the following: (1). 18+25 (2). 18+(25) (3). (18)+25 (4). (18)+(25)