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---
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id: 5900f4231000cf542c50ff34
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challengeType: 5
title: 'Problem 181: Investigating in how many ways objects of two different colours can be grouped'
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videoUrl: ''
localeTitle: 'Problema 181: investigar de cuántas maneras se pueden agrupar los objetos de dos colores diferentes'
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---
## Description
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< section id = "description" > Teniendo tres objetos negros B y un objeto blanco W, se pueden agrupar en 7 formas como esta: (BBBW) (B, BBW) (B, B, BW) (B, B, B, W) (B, BB, W ) (BBB, W) (BB, BW) ¿De cuántas maneras se pueden agrupar sesenta objetos negros B y cuarenta objetos blancos W? < / section >
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## Instructions
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< section id = "instructions" >
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< / section >
## Tests
< section id = 'tests' >
```yml
tests:
- text: < code > euler181()</ code > debe devolver 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();
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```
< / div >
< / section >
## Solution
< section id = 'solution' >
```js
// solution required
```
< / section >