Solution: (1). According to the meaning of the question, only 10 10 has the largest binomial coefficient, so * * has10/kloc-0 * 2-1= 2019 (item).

Then n = 2019-1= 2018.

(2): Yes.

To sum up: the value is-1.

This problem needs to solve a series of binomial expansion problems by assignment method, which is a common solution.

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