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Find number abc

If 6ac9a + b0cab = 9a9c8 find number abc. Multiple solutions may exist.

Correct answers: 14

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I was wondering why the ball k...

I was wondering why the ball kept getting bigger and bigger, and then it hit me.

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Pile driver

In 1791, John Stone of Concord, Mass., patented the pile driver, which he called a "driving pile for bridges." Over fifty years later, on 26 Jun 1847, a steam pile driver was patented in the U.S. by James Naysmyth of Patricroft, England (No. 5,172).

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