What is the missing number?
[4956] What is the missing number? - MATH PUZZLE: Can you replace the question mark with a number? - #brainteasers #math #riddles - Correct Answers: 95 - The first user who solved this task is Djordje Timotijevic
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What is the missing number?

MATH PUZZLE: Can you replace the question mark with a number?
Correct answers: 95
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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Back-Up Sensor

Inventor of the automobile back-up Sensor -
I bet you think it was Ford, maybe GM, how about Chrysler? No, then how about Mercedes Benz?
No, not at all, it was a Chinese farmer!
Most of the newest cars have a Back-Up Sensor that warns the driver before the rear bumper actually comes in contact with something. Most people probably think that this valuable feature came out of the minds of great engineers, but it was recently disclosed that the concept was first developed by a Chinese farmer. His invention was simple and effective. It emits a high-pitched squeal when the vehicle backs into something.

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Arthur Mellen Wellington

Died 17 May 1895 at age 47 (born 20 Dec 1847). American civil engineer, writer and editor whose fame was based on writing The Economic Theory of the Location of Railways, which was issued in book form in 1887, but was first published as series of articles in the Railway Gazette beginning in 1876. He had acquired his engineering skills beginning as an apprentice at age 16. His first employment was with the engineering corps of the Brooklyn Park Department under Frederick Law Olmsted. From 1868, he turned to railway work, and over a number of years rose from being a transitman for the Blue Ridge R.R. to engineer-in-charge of the Toledo, Canada Southern and Detroit railroad. He gained futher public recognition from his work and writings on the editorial staff of the Railway Gazette (1884-87) and thereafter an industrious editor-in-chief and part-owner ofThe Engineering News.«
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