Which is a winning combination of digits?
[406] 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. - #brainteasers #mastermind - Correct Answers: 62 - The first user who solved this task is Sanja Šabović
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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: 62
The first user who solved this task is Sanja Šabović.
#brainteasers #mastermind
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For their anniversary, a coupl...

For their anniversary, a couple went out for a romantic dinner. Their teenage daughters said they would fix a dessert and leave it waiting.
When they got home, they saw that the dining room table was beautifully set with china, crystal and candles, and there was a note that read: "Your dessert is in the refrigerator. We are staying with friends, so go ahead and do something we wouldn't do!"
"I suppose," the husband responded dryly, "we could clean the house."
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Edison patent

In 1902, Thomas A. Edison was issued a U.S. patent for a "Reversible Galvanic Battery" (No. 692,507), a design for a permanent battery with a large capacity per unit of weight. Finely divided cadmium is used as the oxidizable element. An oxide of nickel or cobalt is used as the depolarizer, mixed with a flake-like conducting substance such as graphite. According the patent, "the oxid of nickel or cobalt is raised to a superperoxid condition when charged. In discharging the nickel or cobalt oxid will be reduced to a lower state of oxidation, while the metallic cadmium will be oxidized." The active materials are packed under pressure in perforations of a conducting plate. The nickel oxide is preferred as less costly and less soluble in the alkaline electrolyte.
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