---
id: 5900f4231000cf542c50ff34
challengeType: 5
title: 'Problem 181: Investigating in how many ways objects of two different colours can be grouped'
videoUrl: ''
localeTitle: 'Problema 181: Investigando em quantas maneiras objetos de duas cores diferentes podem ser agrupados'
---

## Description
<section id="description"> Possuindo três objetos pretos B e um objeto branco W, eles podem ser agrupados de 7 formas como: (BBBW) (B, BBW) (B, B, BW) (B, B, B, W) (B, BB, W (BBB, W) (BB, BW) De quantas maneiras podem ser agrupados sessenta objetos pretos B e quarenta objetos brancos? </section>

## Instructions
<section id="instructions">
</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>euler181()</code> deve retornar 83735848679360670.
    testString: 'assert.strictEqual(euler181(), 83735848679360670, "<code>euler181()</code> should return 83735848679360670.");'

```

</section>

## Challenge Seed
<section id='challengeSeed'>

<div id='js-seed'>

```js
function euler181() {
  // Good luck!
  return true;
}

euler181();

```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```
</section>