When I checked the solutions I found that there was a formula to be derived for this question . But how one can derive this formula?
Help me understand the question..The Ego Stone of InfInITy 2k18 ..i can not understand how one can derive that formula
The formula falls out very naturally. Every row has some sum S, so the sum over the matrix is nS. However we also know that the sum over the matrix is 1+2+\ldots+n^2. So we have
solve for S to get
Thank you…Learnt something new today.
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