Question 95
Let $A$ be the sum of the decimal digits of the largest 2017-digit multiple of $7$ and let $B$ be the sum of the decimal digits of the smallest 2017-digit multiple of $7$. Find $A - B$.
MathNet 2017-part-04 — 176 problems (EN–VI) Question 95
Math Olympiad Vault · MathNet 2017-part-04 — 176 problems (EN–VI)