Can you solve this game math puzzle in seconds?

The game in question is Resident Evil Zero. Didn’t think there’d be a math puzzle in a survival horror game? Neither did I.

The game video footage (video link) is over 10 minutes long, so I’ll highlight the relevant parts. Warning: the player is uh, slightly liberal in his use of words. This video’s considered ok, comparing with his other videos. His commentary is colourful and funny, which is why I watch his videos. He makes surviving in a horror story, fun. *smile*

The player mentions a difficult math puzzle at about 1 minute 44 seconds (henceforth noted 1:44) into the video. That got my attention. A math puzzle in a game?

He even tagged it as such:

Stupid math puzzle

I watched the video till about 7:44, where the math puzzle finally made its entrance.

Resident Evil Zero math puzzle part 1

On the screen is shown a “00/81”. A number pad with number keys 1 to 9 is on the right. When a number key is entered, a knob is lit in red and the value of the number is added to the numerator of the displayed ratio. There are 10 unlit knobs.

The puzzle should be obvious. Match the numerator and the denominator with 10 entries.

This is the math puzzle?! Still, in an action game, any kind of math puzzle is probably fatal. I can fumble on simple additions too. Guess I need to practise more.

Anyway, his answer was 9,9,9,9,9,9,9,8,7,3 for a total of 81. Puzzle solved. Wait, there’s more.

Resident Evil Zero math puzzle part 2

In the second part of the puzzle (at about 8:13), the numerator was obscured. The denominator was 67. This time, the player had to really know what he should enter before entering anything. He fumbled for the right combination for about 2 minutes. And he hadn’t saved the game since the beginning of the game…

With about 20 seconds left on the clock, he finally solved it. His answer was 5,5,5,5,9,9,9,9,3,8 for a total of 67.

So my challenge to you is, can you quickly come up with a solution in a timed situation? How would you solve the problem? What goes through your mind while you’re coming up with an algorithm for it?

I’d love to hear your thoughts and comments. I’ll publish what my thoughts are too (some days later). Hint: the last entry is the most important.

You’re most welcome to submit well thought solutions in pseudocode too, eliminating the limited time factor.

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