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Venkat Katrala

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

Internal Combustion Engine

In 1860, the Società Anonima del nuova motore Barsante e Matteucci (Anonymous Society of the New Barsanti and Matteucci Engine) was formed in Florence, Italy, to manufacture internal combustion engines. On 5 Jun 1853, Father Eugenio Barsante and engineer Felice Matteucci were the first to record having designed a three-stroke gas engine that was to be commercially developed. They deposited a sealed envelope at the secretariat of the Georgofili Academy of Florence outlining their work to that date. They also held British patents. The first engine in actual operation was installed in 1856 at the Maria Antonia Railway Station in Florence. A piston was moved by atmospheric pressure after a vacuum was produced by the explosion of flammable gas inside it using an electric spark from a Rumkoff coil.«

A doctor and a lawyer were att...

A doctor and a lawyer were attending a cocktail party when the doctor was approached by a man who asked advice on how to handle his ulcer. The doctor mumbled some medical advice, then turned to the lawyer and remarked, 'I never know how to handle the situation when I'm asked for medical advice during a social function. Is it acceptable to send a bill for such advice?'

The lawyer replied that it was certainly acceptable to do so.

The next day, the doctor sent the ulcer-stricken man a bill. The lawyer also sent one to the doctor.
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