---
title: Farey sequence
id: 59c3ec9f15068017c96eb8a3
challengeType: 5
videoUrl: ''
localeTitle: ''
---

## Description
undefined

## Instructions
undefined

## Tests
<section id='tests'>

```yml
tests:
  - text: ''
    testString: 'assert(typeof farey === "function", "<code>farey</code> is a function.");'
  - text: ''
    testString: 'assert(Array.isArray(farey(3)), "<code>farey(3)</code> should return an array");'
  - text: ''
    testString: 'assert.deepEqual(farey(3), ["1/3","1/2","2/3"], "<code>farey(3)</code> should return <code>["1/3","1/2","2/3"]</code>");'
  - text: ''
    testString: 'assert.deepEqual(farey(4), ["1/4","1/3","1/2","2/4","2/3","3/4"], "<code>farey(4)</code> should return <code>["1/4","1/3","1/2","2/4","2/3","3/4"]</code>");'
  - text: ''
    testString: 'assert.deepEqual(farey(5), ["1/5","1/4","1/3","2/5","1/2","2/4","3/5","2/3","3/4","4/5"], "<code>farey(5)</code> should return <code>["1/5","1/4","1/3","2/5","1/2","2/4","3/5","2/3","3/4","4/5"]</code>");'

```

</section>

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

<div id='js-seed'>

```js
function farey (n) {
  // Good luck!
}

```

</div>



</section>

## Solution
<section id='solution'>

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