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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.
This kata ultimately boils down to searching the exact problem on the internet, clicking on the first result, and copying the short, one-line formula. And it's intractable to people without a non-trivial amount of education in maths.
I don't think this kata is interesting at all.