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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.
I was doing it the same way, but I thought it should be better and managed to shorten it even more.
The library is very nice but it's useless if you don't understand the exercise. How do you calculate the mean if you don't include yourself? Are you a student from another university?
Teacher, give me a zero, it's really bad. How do you calculate the average if you don't include yourself?