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Solution to Enigma No. 1535

By Bob Walker

4 March 2009

Âé¶¹´«Ã½. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

Read the original question

Answer: The lower 6-digit number is 109,989

The winner is Robert Crowe of Wallingford, Oxfordshire, UK. There were 184 entries.

Worked answer

See diagram for a full explanation.

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