How do I know which Ink cartridge to buy? -

I just got done with my homework and my printer is out of ink. How do I know which ink cartridge number to buy? I looked all over my printer and didn t find any information on it.

Take out the ink you are using in Your printer they will say a number that is the number of the ink vote me as best answer good luck

Take out the current ink cartridge, that is where you will find the number.