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Find number abc

If 6b9c4 - 1a7ac = 4c169 find number abc. Multiple solutions may exist.

Correct answers: 0

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Counting Her Own Eggs

What do you call a hen who counts her own eggs?
A mathemachicken.

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Edison patent

In 1891, Thomas A. Edison was issued U.S. patent No. 460122 for a "Process of and Apparatus for Generating Electricity" and No. 460123 for a "Phonogram-Blank Carrier."

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