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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: 42

The first user who solved this task is Nílton Corrêa de Sousa.

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Cost of Lawyer

Pickpocket (visiting friend in jail): "I hired a lawyer for you this morning, Slim, but I had to hand him my Rolex as a retainer."
Slim: "Did he keep it?"
Pickpocket: "He thinks he did."

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Daniel Kirkwood

Born 27 Sep 1814; died 11 Jun 1895 at age 80.American astronomer and mathematician who noted in about 1860 that there were several zones of low density in the minor-planet population. These gaps in the distribution of asteroid distances from the Sun are now known as Kirkwood gaps. He explained the gaps as resulting from perturbations by Jupiter. An object that revolved in one of the gaps would be disturbed regularly by the planet's gravitational pull and eventually would be moved to another orbit. Thus gaps appeared in the distribution of asteroids where the orbital period of any small body present would be a simple fraction of that of Jupiter. Kirwood showed that a similar effect accounted for gaps in Saturns rings.

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