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 Showing results 1 to 3 of 3 Search took 0.01 seconds. Search: Posts Made By: Dr Sardonicus
 Forum: Puzzles 2020-09-01, 12:24 Replies: 20 Views: 3,506 Posted By Dr Sardonicus The number of terms in the sum for N-digit "ok"... The number of terms in the sum for N-digit "ok" numbers in the problem at hand is 5*6N-1, proving the sum is positive for every N. The smallest possible n is (as you indicate) 3*10N-1. Since for...
 Forum: Puzzles 2020-08-31, 11:58 Replies: 20 Views: 3,506 Posted By Dr Sardonicus Although periodicity goes out the window, and... Although periodicity goes out the window, and again it can never lead to a proof, Benford's Law tells us that the proportion of n for which the block of k leading digits is lacking a given nonempty...
 Forum: Puzzles 2020-08-30, 02:33 Replies: 20 Views: 3,506 Posted By Dr Sardonicus FWIW, it appears that the last power of 2 that... FWIW, it appears that the last power of 2 that does not contain all ten decimal digits is 2^168 = 374144419156711147060143317175368453031918731001856 which lacks the decimal digit 2. Every...
 Showing results 1 to 3 of 3

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