2018-09-30 22:01:58 +00:00
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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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---
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## Description
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<section id='description'>
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Having three black objects B and one white object W they can be grouped in 7 ways like this:
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(BBBW)(B,BBW)(B,B,BW)(B,B,B,W)
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(B,BB,W)(BBB,W)(BB,BW)
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In how many ways can sixty black objects B and forty white objects W be thus grouped?
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</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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2018-10-04 13:37:37 +00:00
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tests:
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- text: <code>euler181()</code> should return 83735848679360670.
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2018-10-08 00:01:53 +00:00
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testString: 'assert.strictEqual(euler181(), 83735848679360670, "<code>euler181()</code> should return 83735848679360670.");'
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2018-09-30 22:01:58 +00:00
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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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</section>
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