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One-Two-Three
I
first heard this puzzle from a Mensa member who had come across it years
before at a mathematical conference in Holland. I gave the puzzle to a
friend of mine who could not solve it and took it along to his club. The
members there pondered over it for many hours without success. Finally,
one member took it home to show his twelve-year-old son, who solved it
in five minutes. It is that type of puzzle.

What is the next row of digits? |