This illustration from an 80s computer gaming book offers a perplexing puzzle. How do the answers to each computer screen make sense?
From Inside Basic Games by Richard Mateosian, 1981.
Answer: "Note that three of the computer screens each feature one number unlike the others. The proper answer is always the digit whose position in the computer keyboard number pad corresponds to the odd position on the screen. For example, in the first screen, the odd number is at the bottom left, the position of the "1" key of a keyboard's number pad. The second screen's odd number is at the center, where the "5" is located on a key pad. There are no odd numbers in the third screen, hence an answer of "0.". (The answer is in black text on the black background. Highlight it to view.)
