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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.
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution
Could someone explain this solution
grate! good job!
4m= n^2(n+1)^2
n^4 < n^2*(n+1)^2 < (n+1)^4
Great!The idea is the same as mine but the code is simpler than mine
Great!
1^3 + 2^3 + 3^3 = 6^2 , 1+2+3= 3*(3+1)/2 = 6
I have the same idea like that.
My idea is using inductive reasoning to prove that n^3+(n-1)^3+...+1 = (n^2*(n+1)^2)/4.
how does ex work?