Why is $\frac {987654321} {123456789} = 8. 0000000729?!$ 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 downhill si
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 $10049$ instances of $12345 $ There were $969$ instances of $123456$ There were $97$ instances of $1234567$ There were $9$ instances of $12345678$
$12345679$ and friends - Mathematics Stack Exchange As an additional note, it is in fact true that the multiples of $123456789$ (note! not $12345679$ which I explained above) that are relatively prime to $9$ also result in a permutation of those digits (including 0 when you reach 10 digits): $$1 \times 123456789 = 123456789$$ $$2 \times 123456789 = 246913578$$ $$4 \times 123456789 = 493827156$$ $$5 \times 123456789 = 617283945$$ $$7 \times