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Find number abc

If 9a8bb - cbb8b = a5ac0 find number abc. Multiple solutions may exist.

Correct answers: 25

The first user who solved this task is Djordje Timotijevic.

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Walking economy

A guy is walking down the street with his friend. He says to his friend, "I'm a walking economy."

His friend replies, "How's that?"

"It's like this -- my hair line is in recession, my stomach is a victim of inflation, and the combination of these factors is putting me into a deep depression."

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Mount Washington Cog Railway

In 1866, a public demonstration was given of the first cog railway in the world to show the first half-mile of track at the base of Mount Washington, the highest peak in the Northeast U.S. The Mount Washington Cog Railway eventually ran to the summit of Mount Washington, N.H. giving views of four states, Canada, and the Atlantic Ocean. Invented by Sylvester Marsh of Littleton, N.H., work began on the railway in May 1866 and finished in July 1869 at a cost of $139,500. In 1869, the Cog Railway was an engineering marvel, a new technology of toothed cog gears, rack rails and tilted boilers. A third toothed rail was laid between the steel rails for the wheels. In the present day, it remains in use, the only cog railway still powered by steam.

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