BRAIN TEASERS

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Which is a winning combination of digits?

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: 40

The first user who solved this task is Djordje Timotijevic.

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Learning About Democracy

I taught my kids about democracy tonight by having them vote on which movie to watch and pizza to order.
I then picked the movie and pizza because I'm the one with the money.

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Station indicator

In 1893,a patent for a "Station Indicator" was granted to the black American inventor Thomas W. Stewart with William E. Johnson, of which they assigned a half interest to Levi and Albert Johnson, all of Detroit, Michigan (U.S. No. 499,895). The invention was for use in railway and street cars to indicate the different stations and streets the car is approaching. It was to automatically advance a belt of sign cards displaying the names of the stations and streets. This advance was activated by a lever on the outside of the car coming into contact with an inclined projection beside the track. An alarm would also sound. Another lever allowed the vehicle operator to reverse the movement of the belt for the return journey.

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