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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.
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Hello all.
My, i didn't think about ... THAT !!!
Of course !!!
Thank you very much for this hint !!! I should read more carrefully next time !!!
False, it's 81. 90-len([5,15,25,35,45,55,65,75,85]) = 81.
edit my mistake: I forgot about 50,51,52... ect
You are welcome!
Have a good time on CodeWars! :-)
O . I got it. Thank you very much!
72 is the count of numbers from 1 to 90 that have no "5"-digit in it.
(1, 90)) == (72) I can't understand why..