ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
43 lines
781 B
Markdown
43 lines
781 B
Markdown
---
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id: 5900f4a01000cf542c50ffb2
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title: 问题307：芯片缺陷
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challengeType: 5
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videoUrl: ''
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dashedName: problem-307-chip-defects
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---
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# --description--
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k个缺陷随机分布在一家工厂生产的n个集成电路芯片中（在芯片上可以发现任何数量的缺陷，每个缺陷与其他缺陷无关）。
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令p（k，n）表示存在至少3个缺陷的芯片的概率。 例如p（3.7）≈0.0204081633。
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找到p（20,000，1 000 000）并以0.abcdefghij的形式将答案四舍五入到小数点后10位。
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# --hints--
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`euler307()`应该返回0.7311720251。
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```js
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assert.strictEqual(euler307(), 0.7311720251);
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```
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# --seed--
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## --seed-contents--
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```js
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function euler307() {
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return true;
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}
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euler307();
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```
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# --solutions--
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```js
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// solution required
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```
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