Calculate the number 877
[6076] Calculate the number 877 - NUMBERMANIA: Calculate the number 877 using numbers [7, 1, 2, 1, 15, 866] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 17 - The first user who solved this task is Nílton Corrêa de Sousa
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Calculate the number 877

NUMBERMANIA: Calculate the number 877 using numbers [7, 1, 2, 1, 15, 866] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 17
The first user who solved this task is Nílton Corrêa de Sousa.
#brainteasers #math #numbermania
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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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First Audion tube

In 1906, the first triode was ordered by Lee de Forest who instructed the New York automobile lamp maker, H. W. Candless, to make a glass bulb containing a "grid" wire between a filament and an electrode plate. These specifications extended the Fleming two-element diode valve design previously published in the Proceedings of the Royal Society. The third element - the grid wire - regulated the flow of electrons between the filament and the anode plate, producing an amplification of the variations in a signal voltage applied to the grid. De Forest named his invention the "Audion." Within a few years (1913-1917) he was able to profit from his patents that he sold to AT&T for a total of $390,000.«[Image: A de Forest Audion tube, circa 1912.]
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