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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 not giving your desired result because your example has "takes" instead of "sekat". Your example: "only tneserp with srettel the and the or tsisnoc dedulcni will same be takes word"
Hint: You're not meant to calculate the factorial. Find another way to find the number of zeros.
Hint: You're not meant to calculate the factorial. Find another way to find the number of zeros.