1) The size of Googles scanned collection of books is estimated to be 2969.6 GB. How many 4 PB computer hard disks are required to store this information. (NOTE: You may use a calculator to compute your answer to this question)

2) A digital computer image, IMAGE A, is made up 128 x 128 pixels. You can think about a pixel as a box containing part of an image, so in a 128 x 128 pixel image, you will have a total of 16,384 boxes. Computer images come in a range of different formats (e.g. png, tiff, jpg,) and types (e.g. grayscale vs color images). For grayscale images, each pixel can only contain a single color value representing as specific shade of gray (e.g. light gray, dark gray, black,). Whereas for a color image, 3 different color values are used to represent each pixel. Assuming that every pixel is represented as a single byte of information, how may bits are contained in:

1. The grayscale version of IMAGE A
2. The color version of IMAGE A