I’m not sure how to make use of your hint. I solved the problem for n, the largest number in the sequence of eleven, and a, the number Maria erases, by the fol

I’m not sure how to make use of your hint. I solved the problem for n, the largest number in the sequence of eleven, and a, the number Maria erases, by the following: n - 11 < a < n + 1 11(n + n - 10)/2 = 2012 + a I’m interested to know what other methods may be used to solve it (apart from brute force).