What is the shortest way to write the number $1234567890$?
Here's a challenge : find the shortest way to write the number $1234567890$ . There is several ways to write the number $1234567890$ : $1.23456789 × 10^9$ $2×3^2×5×3607×3803$ …
Why does this pattern occur: - Mathematics Stack Exchange
Dec 31, 2019 · Stack Exchange Network. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most trusted online community for …
sequences and series - Mathematics Stack Exchange
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, …
Why does $987,654,321$ divided by $123,456,789 = 8$?
Jan 20, 2017 · Consider the product. $$9\cdot123456789=1111111101.$$ This pattern is due to the fact that $9$ is one less than the basis of the numeration so that the products with …
A keyboard so real you can almost TASTE it - code golf
Dec 13, 2016 · `1234567890-=BS TAB qwertyuiop[]\ CAPS asdfghjkl;'ENTER SHIFT zxcvbnm,./SHIFT It enters it pretty straightforward, but there are a few tricks that we use to …
Does $\\pi$ contain the combination $ 1234567890$?
In the first 1 billion digits of $\pi$, I found two instances of $123456789$, but no instances of $1234567890$. Here's a simple example. In the first billion digits, there were $10049$ …
code challenge - Print the QWERTY keyboard using keys that are …
Dec 27, 2015 · Jolf, 118 + 51 = 169. Try it here! (underscores in explanation used to denote a used space) R m{"QWERTYUIOP'ASDFGHJKL'ZXCVBNM"#DN+*S' RH' }"\n" _m map …
Adjacent Letter Test - Code Golf Stack Exchange
Nov 27, 2015 · 1234567890 QWERTYUIOP ASDFGHJKL ZXCVBNM In the diagram above Q is below 1 but not below 2, so a string that contains 1qa or aq1 anywhere inside it would make …
Why is $\\frac{987654321}{123456789} = 8.0000000729?!$
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 …
Permutation identities similar to - Mathematics Stack Exchange
$(7901234568 / 9876543210) * 1234567890 = 0987654312$ The above re-write (with slightly artificial but still valid pre-pending right hand side of the initial arithmetic identity with leftmost …