Find number abc
[6724] Find number abc - If 4b39a + 24993 = b239c find number abc. Multiple solutions may exist. - #brainteasers #math - Correct Answers: 39 - The first user who solved this task is Nasrin 24 T
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Find number abc

If 4b39a + 24993 = b239c find number abc. Multiple solutions may exist.
Correct answers: 39
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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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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NY Subway

In 1904, the first underground and underwater rail system in the U.S., the New York City Subway, began operating. Even with elevated train lines springing up around the city, the need for an underground rapid transit railroad was obvious to clear street congestion and spread city development into the outlying areas. Almost 8,000 men participated in building the 21-mile (33.6 km) route, under chief engineer, William Barclay Parsons. Building the subway was a complex and dangerous task; at least 44 people died in the effort: This first rapid transit subway, the IRT (Interborough Rapid Transit), was opened in New York City by Mayor McLellan. The subway and bus fare was set at one nickel. The cars operated between the Brooklyn Bridge and 145th St at Broadway.[Image: City Hall Station platform, showing natural lighting.]
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