Figure 1 shows a 10 x 8 bitmap image that uses three colours. Calculate the minimum file size that would be required to store the bitmap image in Figure 1. Give your answer in bytes. Show your working.

To calculate the minimum file size of a bitmap image, we need to determine the total number of pixels and the number of bits required to store the colour of each pixel (the colour depth). 1. **Calculate the total number of pixels:** The image is 10 pixels wide and 8 pixels high. Total pixels = Width × Height = 10 × 8 = 80 pixels. 2. **Calculate the minimum bits per pixel (colour depth):** The image uses 3 colours. We need to find the smallest number of bits, `n`, such that 2^n is greater than or equal to the number of colours. - If n=1, 2^1 = 2 colours (not enough). - If n=2, 2^2 = 4 colours (this is enough to represent 3 colours). So, we need a minimum of 2 bits per pixel. 3. **Calculate the total file size in bits:** Total bits = Total pixels × Bits per pixel = 80 × 2 = 160 bits. 4. **Convert the file size to bytes:** There are 8 bits in 1 byte. Total bytes = Total bits / 8 = 160 / 8 = 20 bytes.