Jump to content
BrainDen.com - Brain Teasers

dgreening

Members
  • Content count

    124
  • Joined

  • Last visited

  • Days Won

    13

dgreening last won the day on August 1

dgreening had the most liked content!

Community Reputation

5

About dgreening

  • Rank
    Advanced Member

Profile Fields

  • Gender
    Male
  • Location
    Maryland [DC area]

Recent Profile Visitors

3542 profile views
  1. A bug problem

    Sorry, something got lost in copying and pasting. The site does not like the formatting used in word, so I am attaching a picture of the solution ... apologies in advance.
  2. A bug problem

    A friend and I were working on this. Mark came up with an elegant solution. Close-form (explicit function) solution: .
  3. A perfect lamp

    This is very interesting, but I think there is a more concrete answer.
  4. Spin the bottle (no kissing involved)

    My first thought was like Capt Ed. BUT thinking about it some more.
  5. gambling strategy

    No dispute here.
  6. Precision Dornicks

    Aha! I just didn't follow the same process through to get the supper precision devices! Thanks
  7. gambling strategy

    Curious about your result. If you average over many trials are your expected winnings positive? As I mentioned, I only did a small number of runs [about 100]. BTW - I like your title "Retired Expert"! I think that if you do a large number of runs, you eventually get to about 50%. I was quoting bonanova solution/answer, not my proposed strategy. Your strategy is not applicable, you can't bet more money than you have, if your current money is 50$, your original money is 100$, so 2*100-50 = 150$, which you don't have. Now I explain, my proposed strategy. Hidden Content yes, if you [and the house] are willing to bet micro, nano or pico dollars, then the game can go on forever. But your money is gone, so it is theoretically correct, but not very practical.
  8. Precision Dornicks

    An answer for part 1
  9. Code needs testing.

    Perhaps some more description of the task would help. What is the context for this question??
  10. gambling strategy

    Now I am confused. I think I followed the strategy you described yesterday, when you postulated that it would deliver 100% chance of winning. But, now your simulation it gives you a 50% chance of winning. Did I miss something??
  11. gambling strategy

    I was working on the strategy that you describe: Bet half my money [rounded to an integer]; orbet the "ceiling" [twice my original money - Current money].Testing this in a spread sheet [with only about 100 trials] I am winning about 62% of the time.
  12. Serial numbers...but!

    The hint about primary numbers did not help, but I noticed a pattern
  13. How big is the ladder

    I would be interested in how you calculated your answer. I came up with something slightly different
  14. Maths Teaser

    While driving home last night I realized that I had made the problem much more complicated than it needed to be
×