QUESTION9 Which of the following bit patterns (represented in hexadecimal notation) represents a positive number in two's complement notation? O A8 O 7E QUESTION 10 Which of the following provides a compressed representation of an image by limiting the number of different pixel colors to 256, thereby enabling each pixel in an image to be represented by a single byte whose value indicates which of a palette of entries represents the pixel's color? JPEG MPEG GIF ASCI