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Find number abc

If 565ba + a3c0b = 150b31 find number abc. Multiple solutions may exist.

Correct answers: 81

The first user who solved this task is Djordje Timotijevic.

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After twelve years in prison...

After twelve years in prison, a man finally escapes.
When he gets home, filthy and exhausted, his wife says, "Where have you been? You escaped eight hours ago!"

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Elevator

In 1861, the safety elevator was patented as a “Hoisting Apparatus”by the American inventor, Elisha G. Otis, of Yonkers, New York. (No. 31,128). His invention was designed to arrest a fall in case of the lifting rope breaking. It used spring-loaded pawls that would release and engage in a mortised track in the walls of the shaft. In 1853, Otis had demonstrated a freight elevator equipped with a safety device to prevent falling in case a supporting cable should break. This increased public confidence and Otis established a company for manufacturing elevators. The first elevator for public use was a steam driven type installed by Otis Brothers (1857) in the five story Broadway department store of E.W Haughtwhat & Co.

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