10. Suppose a digital camera has a storage capac- ity of 500MB. How many black-and-white pho- tographs could be stored in the camera if each consisted of 512 pixels per row and 512 pixels per column if each pixel required one bit of storage? 11. Suppose an image is represented on a dis- play screen by a square array containing 256 columns and 256 rows of pixels. If for each pixel, 3 bytes are required to encode the color and 8 bits to encode the intensity, how many byte-size memory cells are required to hold the entire picture