2018-10-10 18:03:03 -04:00
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---
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id: 5900f4231000cf542c50ff34
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challengeType: 5
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title: 'Problem 181: Investigating in how many ways objects of two different colours can be grouped'
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videoUrl: ''
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localeTitle: 问题181：调查两种不同颜色的对象可以分组的方式
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---
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## Description
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<section id="description">有三个黑色物体B和一个白色物体W它们可以用7种方式分组：（BBBW）（B，BBW）（B，B，BW）（B，B，B，W）（B，BB，W） （BBB，W）（BB，BW）在六十个黑色物体B和四十个白色物体W的分组方式中有多少种？ </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>euler181()</code>应该返回83735848679360670。
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2020-02-18 01:40:55 +09:00
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testString: assert.strictEqual(euler181(), 83735848679360670);
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2018-10-10 18:03:03 -04:00
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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 euler181() {
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// Good luck!
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return true;
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}
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euler181();
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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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2020-08-13 17:24:35 +02:00
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/section>
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