Find number abc
If 247c4 - b3ac4 = bbb00 find number abc. Multiple solutions may exist.Correct answers: 105
The first user who solved this task is Djordje Timotijevic.
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Leeuwenhoek description of lake waterIn 1674, Antonie van Leeuwenhoek, in his continuing series of communications to the Royal Society, wrote a letter describing his observation on lake water. It included a clear description of the green charophyte alga Spirogyra. This was the first recorded observation of protozoa.] |