# What Are Those Hundreds For?

**Number Theory**Level 2

\[ \large \overline{2xy} + \overline{3yx} + \overline{6xx} \]

Which of the following must always be a divisor of the sum of the three 3-digit integers shown above?

\[ \large \overline{2xy} + \overline{3yx} + \overline{6xx} \]

Which of the following must always be a divisor of the sum of the three 3-digit integers shown above?

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