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Find number abc

If 89ba8 + a7c93 = bb66ab find number abc. Multiple solutions may exist.

Correct answers: 39

The first user who solved this task is Djordje Timotijevic.

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John Wilkins

Died 19 Nov 1672 (born 1614). English churchman, scholar and scientist who was one of the founders and the first secretary of the Royal Society, London. He wrote for the common reader the Discovery (1638) and the Discourse (1640) which showed how reason and experience supported Copernicus, Kepler and Galileo rather than Aristotlian or literal biblical doctrines. In 1641, he anonymously published a small but comprehensive treatise on cryptography. In Mathematical Magick (1648) he described and illustrated the balance lever, wheel, pulley, wedge and screw in a part called “Archimedes or Mechanical Powers” and in a second part “Daedalus or Mechanical Motions” such strange devices as flying machines, artificial spiders, a land yacht, and a submarine.«

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