Find number abc
If 7a06b + b91c9 = 1c1a04 find number abc. Multiple solutions may exist.Correct answers: 63
The first user who solved this task is Djordje Timotijevic.
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Bjorn KjellstromDied 2 Sep 1995 at age 84 (born 9 Sep 1910).Swedish inventor of the Silva compass which featured a rotating compass dial, and a transparent protractor base plate. As founder of Silva, Inc. in North America, Kjellstrom helped introduce the orienteering sport to the U.S. in the1940s, in part as a way to promote his product. He wrote Be Expert with Map and Compass, considered to be the "bible of orienteering." |