Find the right combination
[5698] Find the right combination - The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot. - #brainteasers #mastermind - Correct Answers: 27 - The first user who solved this task is Djordje Timotijevic
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Find the right combination

The computer chose a secret code (sequence of 4 digits from 1 to 6). Your goal is to find that code. Black circles indicate the number of hits on the right spot. White circles indicate the number of hits on the wrong spot.
Correct answers: 27
The first user who solved this task is Djordje Timotijevic.
#brainteasers #mastermind
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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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Compotype

In 1925, the compotype was patented by its inventor, Clifton Chisholm of Cleveland, Ohio, as an "Embossing Machine" (U.S. No. 1,557,754). The keyboard-controlled machine embossed one line of characters on an aluminum strip with flanged edges. These could be arranged in a holder for several strips in parallel from which several lines of printed material could be produced. Blanks came from a ribbon of metal on a roll, automatically flanged to give a mounting channel shape, and fed between embossing dies. Each character was also printed on a record card, visible during operation. The machine was designed to provide an efficient mechanism for the rapid production of the embossed strips. The patent was assigned to the Multigraph Sales Co. of the same city.
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