Shutterstock / Scott Rothstein
Sometimes there are hidden patterns in numbers when you are not immediately noticed. An example of this is in codes, the sequences of the digits we use to identify products.
Try yourself – find an object with a 13-digit bar code. (In the USA, a 12-digit bar code represents 0 if you represent 0.) The books will not work, as they use a slightly different system, so you can use a copy of you so you can use a copy. New scientist. Add first, third and fifth digits, etc. to get the sum …
