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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.
it's because round will round either up or down depending on if the number after the decimal is .5 or less. try importing the math library and using either floor or ceil function. and adjust from there.
I always feel great when I figure these out. then I see the rest of your answers lol