TR-MO-R1 2017 Problem 28

$A=64\cdot 10^{2014}\cdot(a_1+a_2+a_3+\cdots+a_{2017})$ koşulunu sağlayan en büyük 2017 basamaklı $A=a_1a_2a_3\ldots a_{2017}$ doğal sayısının rakamlar toplamı kaçtır?

A) 11 B) 13 C) 15 D) 19 E) 2017

Official text Turkish Mathematical Olympiad, first round 2017 official paper, page 15. Quoted with source.

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