Computer science file calculations

Question 1

total number of colours

Answer 1

2^n n = number of bits per pixel.

Question 2

File size (bits) - image

Answer 2

image resolution * colour depth = width * height * colour depth

Question 3

File size (bits) - text

Answer 3

number of bits per character * number of characters

Question 4

File size (bits) - sound

Answer 4

Sample rate * bit depth * duration