Jump to content
BrainDen.com - Brain Teasers
  • 0

How many taxis are there?



4 answers to this question

Recommended Posts

  • 0

I appreciate the numerical theory in the answer, but I don't buy into that. A Monte Carlo run shows that 90 is the most likely value, though this decreases slowly. Picking 5 random values from a list, where N is the highest value in the original list, and 90 is the highest of the 5 observed values, and running for 1 million trials, I get a table that looks like this. (I've not listed all values to 190, the last N that had any hits.)

N *** % 90 4.63% 91 9.01% 92 13.13% 93 17.02% 94 20.74% 95 24.21% 96 27.53% 97 30.72% 98 33.71% 99 36.58% 100 39.30%

From this run, the chances are even that N is less than or more than 105.

How to reconcile this result with the numerical analysis?

Also, if the numerical analysis has 2 valid answers, then there must be a range of valid answers in that region. It seems to me that this problem doesn't have an answer, but a handwaving "something about here" result.

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...