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29 de may. de 2015 · The strategy I would use is the following: Goal is to get $100$ as sum. Among the digits $123456789$, pick and choose the sum close to $100$, such as $89$. Therefore I would attempt to get a value of $11$ from $1234567$ using different combinations. When you start working on a smaller sum now (sort of like divide and conquer), you may get the ...
大写123456789怎么写123456789大写分别是：壹、贰、叁、肆、伍、陆、柒、捌、玖。. 1、以中文的形式表示数字，在开具发票、收据的时候经常用到，尤其在金融领域。. 但数字的中文表示和其它语言有很大的不同，如中文以每4.
31 de dic. de 2019 · $\begingroup$ Some questions which seem a bit related: How can I prove this odd property?, Why is $\frac{987654321}{123456789}$ almost exactly $8$?, Why is $\frac{987654321}{123456789} = 8.0000000729?!$ and maybe some of the questions linked there. $\endgroup$ –
20 de ene. de 2017 · This pattern is due to the fact that $9$ is one less than the basis of the numeration so that the products with individual digits (from the right $81,72,63,54\cdots$) have an increasing unit digit, while the tens digit increases. Thus thanks to carries, the digits of the product remains constant (with an anomaly).
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 $12345678$.
24 de mar. de 2018 · Then the results of B and C is multiplied and the result is 123456789. What number did A choose? For clarity: Let the number chosen by A be a, the number chosen by B be b, and the number chosen by C be c. We then have: $$(b^2 + a)(c^2\cdot a)= 123456789.$$ How would you solve this problem without a calculator?
20 de may. de 2013 · 19. $\begingroup$. $98765432 / 12345679 = 8$, exactly. You can see how the pattern works by multiplying out $12345679 * 8$ starting at either end. This explains why your fraction is close to an integer. If you think the $729$ is interesting (I don't), it can be explained by some of the other answers here.
123456789大写分别是：壹、贰、叁、肆、伍、陆、柒、捌、玖。 1、“壹、叁、伍”是最早用作大写数目字的文字。 “壹”最初通作“一”，表示专一的意思。到了春秋时期，“壹”被用作数字。如《管子》“狐白应阴阳之变，六月而且壹见。
11 de ene. de 2013 · It's not entirely coincidence: 246,913,578 = 2·123,456,789. So of course that's what you get if you multiply by 5 or divide by 2. But I find it surprising that that's what you get if you multiply by 7, and I think there's something else at work here. It's also suspicious that none of those numbers are divisible by 3.
4 de oct. de 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, 123456, 12...
