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Puzzle for Today

Puzzle No. 254 – Monday 25 June

Kristoff the Koala is waiting for an important delivery. To pass the time, he writes down all the numbers from one to ten thousand, on the same line, without leaving any gaps between the digits. When he is finished, in how many places will it appear that he has written 2018?

Today’s #PuzzleForToday has been set by Daniel Griller: mathematics teacher, olympiad problem composer, and author of the puzzle book Elastic Numbers

Click here for the answer

The answer is 3 (between 1820 and 1821, between 8201 and 8202, and 2018 itself).

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