Henry Ernest Dudeney/Puzzles and Curious Problems/88 - Digital Progression/Solution

by : $88$

 * Digital Progression

Solution

 * $297$, $564$, $831$
 * $291$, $564$, $837$
 * $237$, $564$, $891$
 * $231$, $564$, $897$

where the common differences are respectively $267$, $273$, $327$ and $333$.