* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
		
			
				
	
	
		
			48 lines
		
	
	
		
			814 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			48 lines
		
	
	
		
			814 B
		
	
	
	
		
			Markdown
		
	
	
	
	
	
---
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id: 5900f4231000cf542c50ff34
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title: >-
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  Problem 181: Investigating in how many ways objects of two different colours
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  can be grouped
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challengeType: 5
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forumTopicId: 301817
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dashedName: >-
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  problem-181-investigating-in-how-many-ways-objects-of-two-different-colours-can-be-grouped
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---
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# --description--
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Having three black objects B and one white object W they can be grouped in 7 ways like this:
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(BBBW)(B,BBW)(B,B,BW)(B,B,B,W)
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(B,BB,W)(BBB,W)(BB,BW)
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In how many ways can sixty black objects B and forty white objects W be thus grouped?
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# --hints--
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`euler181()` should return 83735848679360670.
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```js
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assert.strictEqual(euler181(), 83735848679360670);
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```
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# --seed--
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## --seed-contents--
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```js
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function euler181() {
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  return true;
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}
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euler181();
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```
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# --solutions--
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```js
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// solution required
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```
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