59 lines
1.1 KiB
Markdown
59 lines
1.1 KiB
Markdown
---
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id: 5900f3bc1000cf542c50fecf
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challengeType: 5
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title: 'Problem 80: Square root digital expansion'
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---
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## Description
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<section id='description'>
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It is well known that if the square root of a natural number is not an integer, then it is irrational. The decimal expansion of such square roots is infinite without any repeating pattern at all.
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The square root of two is 1.41421356237309504880..., and the digital sum of the first one hundred decimal digits is 475.
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For the first one hundred natural numbers, find the total of the digital sums of the first one hundred decimal digits for all the irrational square roots.
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</section>
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## Instructions
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<section id='instructions'>
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</section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: <code>euler80()</code> should return 40886.
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testString: assert.strictEqual(euler80(), 40886, '<code>euler80()</code> should return 40886.');
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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function euler80() {
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// Good luck!
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return true;
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}
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euler80();
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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