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Find number abc

If acc90 - 5ccc3 = b00ba find number abc. Multiple solutions may exist.

Correct answers: 73

The first user who solved this task is Melanie Long.

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Radio compass

In 1920, a radio compass was used for first time for aircraft navigation. In a test of the radio compass as an aid to navigation, an F5L left Hampton Roads and flew directly to the battleship Ohio (BB 12), 94 miles at sea in a position unknown to the pilot. Without landing, the plane made the return trip to Hampton Roads, this time navigating by signals from Norfolk.

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