1. What are largest-magnitude positive decimal number and largest-magnitude negative decimal number that can be represented in the (a) 4-bit 2's complement representation (b) 8-bit 2's complement representation. (c) 16-bit 2's complement representation. (d) N-bit 2's complement representation. Hint: Answer part (d) first. 2. Convert the unsigned decimal numbers 491o and 260 to positive binary numbers using the signed 2s complement representation with enough bits to hold the results (below). Then perform the following operations: (a) 26- 49 (b) -26 + 49 (e) -26- 49 (d) 26 49 Convert the answers back to decimal and verify if they are correct. Pay attention to the required number of bits in the result to avoid overflow