79d9012432
* fix(curriculum): tests quotes * fix(curriculum): fill seed-teardown * fix(curriculum): fix tests and remove unneeded seed-teardown
67 lines
1.3 KiB
Markdown
67 lines
1.3 KiB
Markdown
---
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id: 5900f3ff1000cf542c50ff12
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challengeType: 5
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title: 'Problem 147: Rectangles in cross-hatched grids'
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---
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## Description
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<section id='description'>
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In a 3x2 cross-hatched grid, a total of 37 different rectangles could be situated within that grid as indicated in the sketch.
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There are 5 grids smaller than 3x2, vertical and horizontal dimensions being important, i.e. 1x1, 2x1, 3x1, 1x2 and 2x2. If each of them is cross-hatched, the following number of different rectangles could be situated within those smaller grids:
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1x1: 1
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2x1: 4
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3x1: 8
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1x2: 4
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2x2: 18
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Adding those to the 37 of the 3x2 grid, a total of 72 different rectangles could be situated within 3x2 and smaller grids.
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How many different rectangles could be situated within 47x43 and smaller grids?
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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>euler147()</code> should return 846910284.
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testString: assert.strictEqual(euler147(), 846910284, '<code>euler147()</code> should return 846910284.');
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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 euler147() {
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// Good luck!
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return true;
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}
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euler147();
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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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