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Rajaguru Anandhan

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MATH PUZZLE: Can you replace the question mark with a number?

First U.S. commercial gasoline engine

In 1872, George B. Brayton of Boston, Mass. (3 Oct 1830 - 17 Dec 1892) received a U.S. patent for a gas-powered engine (No. 125,166). He did pioneering work inventing this first American commercial internal combustion engine, which he manufactured and sold. Its principle of continuous ignition later became the basis for the turbine engine. A pressurized air-fuel mixture from a reservoir was ignited upon entering a water-cooled cylinder. The Brayton engine was tried in watercraft, one of John Holland's submarines and one for a few months installed in a carriage (1872-3). He held British patent Jul 1890, No. 11,062.«

Best room in the hotel?

The drunk staggered up to the hotel reception and demanded his room be changed.

"But sir," said the clerk, "you have the best room in the hotel."

"I insist on another room!!" said the drunk.

"Very good, sir. I`ll change you from 502 to 555. Would you mind telling me why you don't like 502?" asked the clerk.

"Well, for one thing," said the drunk, "it's on fire."

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