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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.
superb bro!
the way you tried to boil down the numbers from n digits to 1 digit by dividing the number with 10 and then taking mod 10 will gives us the reminder .wonderful!awwesome!