BRAIN TEASERS

# 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.
The first user who solved this task is Djordje Timotijevic.
#brainteasers #mastermind

### A duck walks into a Dairy

A duck walks into a dairy and says

"Give me some chapstick, put it on my bill!"

But the cash register attendee doesn't speak English and cannot understand him.

He does, however, question whether his God is punishing him because as all people know, Ducks cannot speak, however, this hallucination must be punishment for a horrid misdeed.

The employee breaks down into tears and begins reciting prayer.

The duck, slightly miffed, walks out, pondering why he'd need chapstick anyway, since he has no lips... heh heh heh

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## Brain Teasers

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### Paolo Ruffini

Born 22 Sep 1765; died 10 May 1822 at age 56.Italian mathematician and physician who made studies of equations that anticipated the algebraic theory of groups. He is regarded as the first to make a significant attempt to show that there is no algebraic solution of the general quintic equation (an equation with the variable in one term raised to the fifth power). In 1799 Ruffini published a book on the theory of equations with his claim that quintics could not be solved by radicals, General theory of equations in which it is shown that the algebraic solution of the general equation of degree greater than four is impossible. Ruffini used group theory in his work but he had to invent the subject for himself. He also wrote on probability and the application of probability to evidence in court cases.
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