56 lines
1.2 KiB
Markdown
56 lines
1.2 KiB
Markdown
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---
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id: 5900f3d01000cf542c50fee3
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challengeType: 5
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title: 'Problem 100: Arranged probability'
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videoUrl: ''
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localeTitle: 问题100：安排概率
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---
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## Description
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<section id="description">如果一个盒子包含21个彩色光盘，由15个蓝色光盘和6个红色光盘组成，随机拍摄两张光盘，可以看出拍摄两张蓝色光盘的概率，P（BB）=（15/21） ）×（14/20）= 1/2。下一个这样的安排，其中有50％的机会随机拍摄两张蓝色光盘，是一个包含八十五个蓝色光盘和三十五个红色光盘的盒子。通过找到第一个包含总共超过1012 = 1,000,000,000,000个光盘的布置，确定该盒子将包含的蓝色光盘的数量。 </section>
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## Instructions
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<section id="instructions">
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>euler100()</code>应该返回756872327473。
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testString: 'assert.strictEqual(euler100(), 756872327473, "<code>euler100()</code> should return 756872327473.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function euler100() {
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// Good luck!
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return true;
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}
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euler100();
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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