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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
You have to check! Your solution.
The range of numbers is from 1 to 49. Your solution returns numbers from a range, that contains 50 different numbers!
And the problem for RandomTests is, that you are returning a wrong winning class.
Check your solution and maybe, if you do not find the problem, post your code here (mark as spoiler) and we will see.