Can you find a shorter notation than $1234567890$ ? EDIT : For this question, the length of a notation is given by the number of characters used to write the notation on a sheet of paper.

It is not known if $\pi$ is normal or disjunctive, so I'd say with near certainty that nobody here will be able to prove that $1234567890$ does not appear in the decimal expansion of $\pi$.

Dec 13, 2016 · Challenge yourself to create a keyboard layout that is both functional and unique, testing your creativity and programming skills.

Feb 5, 2018 · Given the following input: An integer n where n > 0. A string s where s is not empty and s~=[0-9A-Z]+ (alpha-numeric capitals only). Using a standard, simplified QWERTY keyboard (as …

Feb 24, 2017 · Code Golf Challenge I have an isdue, my fingrrs are fat and I freqintly jave an isdue of ty[ing one keystrpke to the right on my kryboard. I'm afraid the isdue is getyng worse anf worsr as …

May 17, 2015 · The Challenge: Given any input that can be typed on a keyboard, move the text along by N chars. Here is the QWERTY keyboard to be used. You can ignore the modifier keys (Shift, Caps, …

Dec 31, 2019 · Some questions which seem a bit related: How can I prove this odd property?, Why is $\frac {987654321} {123456789}$ almost exactly $8$?, Why is $\frac {987654321} {123456789} = …

Oct 4, 2016 · Related to this question, What is the smallest prime number made of sequential number? are there infinitely many primes of the following form (OEIS A057137)? $1, 12, 123, 1234, 12345, …

May 20, 2013 · Many years ago, I noticed that $987654321/123456789 = 8.0000000729\\ldots$. I sent it in to Martin Gardner at Scientific American and he published it in his column!!! My life has gone …

Oct 10, 2018 · Keyboard layout To clarify any ambiguity over what the standard keyboard layout is below is a list of keys available on each line, including alternate upper keys (accessed using shift). …