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Find number abc

If 6b2a4 + 177bc = ac0c7 find number abc. Multiple solutions may exist.

Correct answers: 20

The first user who solved this task is Nasrin 24 T.

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Astronaut

What do you call a man who doesn't cheat on his wife when he is away on business?

An astronaut!

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Gas burner patent

In 1899, a gas burner was patented by Benjamin F. Jackson, a black American inventor (No. 622,482). His design improved the equal distribution of air under pressure to ensure more complete combusion of the fuel gas. He assigned the patent to Robert Hoe, Theodore Mead and Charles Carpenter of New York City. The previous year, he took out patents on a "Heating Apparatus" and a "Matrix Drying Apparatus."[Image: gas burner vertical section and plan views]

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