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Find number abc

If b9a61 - c768a = 21777 find number abc. Multiple solutions may exist.

Correct answers: 7

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Camping in the woods

I went camping in the woods, but my tent smelled like feet. It was a big musky toe problem.

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Edison patent

In 1909, Thomas A. Edison was issued a patent for an improvement related to Telegraphy (No. 909,877).

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