freeCodeCamp/curriculum/challenges/chinese/08-coding-interview-prep/project-euler/problem-446-retractions-b.c...

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---
id: 5900f52c1000cf542c51003d
challengeType: 5
title: 'Problem 446: Retractions B'
videoUrl: ''
localeTitle: 问题446撤回B.
---
## Description
<section id="description">对于每个整数n&gt; 1函数族fnab由fnabx≡ax+ b mod n定义为abx整数和0 <p>对于1≤n≤NFN=ΣRn4 + 4。 F1024= 77532377300600。 </p><p>求F107mod 1 000 000 007 </p></section>
## Instructions
undefined
## Tests
<section id='tests'>
```yml
tests:
- text: ''
testString: 'assert.strictEqual(euler446(), 907803852, "<code>euler446()</code> should return 907803852.");'
```
</section>
## Challenge Seed
<section id='challengeSeed'>
<div id='js-seed'>
```js
function euler446() {
// Good luck!
return true;
}
euler446();
```
</div>
</section>
## Solution
<section id='solution'>
```js
// solution required
```
</section>