Solve Math Puzzle
IF 1234 + 4567 = 284, 3012 + 8888 = 640, 5111 + 9291 = 95 THEN 9378 + 9999 = ?Correct answers: 35
The first user who solved this task is Roxana zavari.
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BoronIn 1808, Humphry Davy announced in a paper read to the Royal Scociety that he had separated the element boron. Davy had taken boric acid with potassium in a copper tube and heated it to dull redness for fifteen minutes. The resulting olive-gray powder did not effervesce with water or acids, indicating that the potassium had disappeared. However, working independently, French chemist, Joseph Louis Gay-Lussac had announced the same accomplishment nine days earlier, on 21 Jun 1808.«* |