freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-250-250250.english.md

---
id: 5900f4661000cf542c50ff78
challengeType: 5
isHidden: false
title: 'Problem 250: 250250'
forumTopicId: 301898
---

## Description
<section id='description'>
Find the number of non-empty subsets of {11, 22, 33,..., 250250250250}, the sum of whose elements is divisible by 250. Enter the rightmost 16 digits as your answer.
</section>

## Instructions
<section id='instructions'>

</section>

## Tests
<section id='tests'>

```yml
tests:
  - text: <code>euler250()</code> should return 1425480602091519.
    testString: assert.strictEqual(euler250(), 1425480602091519);

```

</section>

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

<div id='js-seed'>

```js
function euler250() {
  // Good luck!
  return true;
}

euler250();
```

</div>



</section>

## Solution
<section id='solution'>

```js
// solution required
```

</section>