4. (25%) Numbers and Memory Address of Array Elements. 1) (5%) Write the hexadecimal representation of the following word: 1010 0101 0011 1111 1101 0110 1011 0111two 2) (5%) What is the 8-bit binary representation of the decimal number -23 in two's complement? 3) (5%) What is the 6-digit hexadecimal representation of the decimal number -23 in two's complement? 4) (5%) For the half-word Page 2 of 5 1111 1111 1101 0011two in two's complement, what decimal (base 10) number does it represent