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Find number abc

If 20b25 - b3b0a = a0bc find number abc. Multiple solutions may exist.

Correct answers: 4

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Naked Man

Q: What did the elephant say to the naked man?

A: "How do you drink water with that?"

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Shutter patent

In 1883, black American inventor J. Cooper was issued a patent for his invention, "Shutter and Fastening" (No. 276,563). In the next few years, he also patented elevator devices.

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