Answer to Question #217982 in Algorithms for Chuzzy

Question

 A 8 Megapixel digital camera stores an eight-bit number for the brightness of each of the primary colours (red, green, blue) found in each picture element (pixel). If every bit is stored (no data compression), how many pictures can be stored on a 256 Megabyte memory card. 

Answer 1

Each color needs one byte to be stored, so 8 Megapixel image need 3*8 = 24 Megabytes to store its data without compression. Therefore 256 Megabyte card can store no more than 256 / 24 = 10 images