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freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-454-diophantine-reciprocals-iii.english.md
mrugesh 22afc2a0ca feat(learn): python certification projects (#38216)
Co-authored-by: Oliver Eyton-Williams <ojeytonwilliams@gmail.com>
Co-authored-by: Kristofer Koishigawa <scissorsneedfoodtoo@gmail.com>
Co-authored-by: Beau Carnes <beaucarnes@gmail.com>
2020-05-27 13:19:08 +05:30

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---
id: 5900f5331000cf542c510045
challengeType: 5
isHidden: false
title: 'Problem 454: Diophantine reciprocals III'
forumTopicId: 302127
---
## Description
<section id='description'>
In the following equation x, y, and n are positive integers.
1/x + 1/y= 1/n
<!-- TODO Use MathJax -->
For a limit L we define F(L) as the number of solutions which satisfy x < y L.
We can verify that F(15) = 4 and F(1000) = 1069.
Find F(1012).
</section>
## Instructions
<section id='instructions'>
</section>
## Tests
<section id='tests'>
```yml
tests:
- text: <code>euler454()</code> should return 5435004633092.
testString: assert.strictEqual(euler454(), 5435004633092);
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler454() {
// Good luck!
return true;
}
euler454();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>