Images - file sizes

An image has a width and depth of 10 pixels and uses a 4 bit colour depth. Work out the file size in bytes.

• 40,000

• 400

• 5

• 50

An image has a width of 20 pixels and depth of 10 pixels. It uses 4 different colours. What is the files size in bytes?

• 600

• 800

• 100

• 50

An image has a width of 50 pixels and a depth 5 pixels. It uses 16 different colours. What is the file size in bytes?

• 4000

• 750

• 125

• 1000

An image has a width of 10 pixels by 10 pixels and a colour depth of 8 bits. What is the files size in bits?

• 300

• 800

• 100

• 8

An image has a width of 15 pixels by 10 pixels and it uses 8 different colours. What is the files size in bits?

• 450

• 56.25

• 1200

• 150