Posts by bwbeach@qoto.org
 (DIR) Post #AQkWVdk3zgwmggG7Sy by bwbeach@qoto.org
       2022-12-19T01:25:57Z
       
       0 likes, 1 repeats
       
       I came across a math puzzle here in the fediverse, and puzzled about it for a while.  (Lost the link to the original post; if it’s yours let me know.)Here’s the problem:Bob was given 30 distinct natural numbers. He wrote down all the 435 pairwise sums.  It appears that among those sums, 230 are divisible by 3.  How many of the original 30 numbers are divisible by 3?I was able to find the answer after playing with it for a bit.  Then I made this cool visualization.  (It’s a spoiler, of course.)
       
 (DIR) Post #ARgE0r8c8dNWaLGEvg by bwbeach@qoto.org
       2023-01-15T21:43:53Z
       
       0 likes, 1 repeats
       
       A friend of mine posed the following puzzle:  You have 12 marbles, which all have the same weight except one, which may be either heavier or lighter.  How can you find the different one in three weighings on a balance scale?I know I’ve seen it before, but it still too me a while to work out a solution.  Then I wanted to visualize the solution, and cobbled together haskell, graphviz, and a couple shell scripts.Then, of course, I saw my solution was wrong and had to re-work it.Spoiler, of course:https://github.com/bwbeach/puzzles/blob/main/weigh-twelve/README.md
       
 (DIR) Post #Ac2tPlNPwCQ9GdxWyW by bwbeach@qoto.org
       2023-11-21T20:58:25Z
       
       0 likes, 0 repeats
       
       I hit the 400 mile mark on my new Tern Vektron e-bike on the way to work.  It happened right near the bakery, which I took as a sign that it was a good day to pick up scone to have with my morning coffee.Almost all of my riding has been to and from work.  It's an 8-mile round trip, so that's about 50 commutes on the bike, and not in the car.  The trip is much more enjoyable riding on the bike path through campus; the route for the car is on the bypass highway that goes around campus.#bike #ebike #WarOnCars #Bloomington #Indiana
       
 (DIR) Post #AjYTOad6vPvAvB8qae by bwbeach@qoto.org
       2024-07-03T13:36:31Z
       
       0 likes, 0 repeats
       
       @futurebird I don’t care what gender drinks are, but it still gets in the way. I ordered a lavender Prosecco (delicious!). The waiter delivered it to the woman at the table. I didn’t know that drink wasn’t allowed for me.