I always do 'take away' for these problems because that's how I've always hit these type of problems ... I never think about using 'difference'. I see the comments here about using 'difference' and I have got to start using that method that makes the math so much easier!

I guessed 6! 5 races to whittled the group down to one string of 5 top runners, then a final to pick out the first 3 across the line. Your method is much better as it takes into account the spread and random distribution of the real 3 top racing rats.

Why is math sad? ...... It has too many problems!

I found my answer on wikipedia: en.wikipedia.org/wiki/6-7_(me...

There seems to be an inside joke here about saying 41 and 67?

Thanks for keeping this list updated! I recently discovered your reading order list and I much prefer it over the others I've found on the internet. I especially like the notes included with your reasoning for a comic's position in your list. Well done and you've made a fan!