WONDER #488: How Smart Are Vending Machines?

Question 1 of 3

What did the first United States vending machine sell?

  1. gum
  2. newspapers
  3. postcards
  4. potato chips

Question 2 of 3

The first-ever vending machine sold what?

  1. gum
  2. newspapers
  3. holy water
  4. potato chips

Question 3 of 3

Which of the following is an example of technology used to identify paper money in vending machines?

  1. optical scanner
  2. magnetic reader
  3. ultraviolet light
  4. all of the above

Check your answers online at https://wonderopolis.org/wonder/how-smart-are-vending-machines.