Which is a winning combination of digits?
[5263] 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: 24 - The first user who solved this task is Djordje Timotijevic
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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: 24
The first user who solved this task is Djordje Timotijevic.
#brainteasers #mastermind
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20 math jokes to make you laugh

I poured my root beer into a square glass...
Now I have a beer

Why was six afraid of seven?
Because seven ate nine!

What do you call a bunch of guys who love math?
Alge-bros!

Why did the obtuse angle go to the beach?
It was over 90 degrees!

How does a mathematician plow fields?
With a pro-tractor.

What's a math teacher's favorite kind of tree?
Geometry.

Why did the girl wear glasses during math class?
It improved di-vision.

Who's the king of the pencil case?
The ruler.

Why doesn't anybody talk to circles?
Because there's no point.

What did the triangle say to the circle?
You're pointless.

Why was the obtuse triangle always upset?
Because it's never right.

What did the zero say to the eight?
Nice belt!

Why did the two 4s skip lunch?
They already 8!

How do you make seven an even number?
Remove the s!

Why was math class so long?
The teacher kept going off on a tangent.

Do you know what's odd?
Every other number!

Are monsters good at math?
Not unless you Count Dracula.

Which king loved fractions?
Henry the ⅛.

Have you heard the one about the statistician?
Probably.

What do you call a number that can't sit still?
A roamin' numeral!

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Camera obscura

In 1544, a solar eclipse was viewed at Louvain, which was later depicted in the first published book illustration of the camera obscura in use. Dutch mathematician and astronomer Reinerus Gemma-Frisius viewed a solar eclipse using a hole in one wall of a pavillion to project the sun's image upside down onto the opposite wall. He published the first illustrationof a camera obscura, depicting his method of observation of the eclipse in De Radio Astronomica et Geometrica (1545). Several astronomers made use of such a device in the early part of the 16th century. Both Johannes Kepler and Christopher Scheiner used a camera obscura to study the activity of sunspots. The technique was known to Aristotle (Problems, ca 330 BC).
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