Tag - Riddler

a thread to bin them all [puzzle]

Share Tweet The most recent riddle on the Riddler consists in finding the shorter sequence of digits (in 0,1,..,9) such that all 10⁴ numbers between 0 (or 0000) and 9,999 can be found as a group of consecutive four digits. This sequence is obviously...

maximal spacing around order statistics [#2]

Share Tweet The proposed solution of the riddle from the Riddler discussed here a few weeks ago is rather approximative, in that the distribution of when the n-sample is made of iid Normal variates is (a) replaced with the distribution of one arbitra...

riddles on a line

Share Tweet In the Riddler of August 18, two riddles connected with the integer set Ã�={2,3,…,10}: Given a permutation of Ã�, what is the probability that the most likely variation (up or down) occurs at each term? Given three players choosing three...