Calculate the number 216
[5611] Calculate the number 216 - NUMBERMANIA: Calculate the number 216 using numbers [3, 7, 9, 2, 36, 273] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 25 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 216

NUMBERMANIA: Calculate the number 216 using numbers [3, 7, 9, 2, 36, 273] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 25
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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Another 14 Dad jokes, be ready for Father's Day

Get your Dad jokes ready on time! Third Sunday of June is Father's Day, have fun with these!

1. Scientists say that one day, it may be possible to live on Mars.
I tried it for a month, gained nearly 3 stone in weight and developed type 2 diabetes!

2. I think I want a job cleaning mirrors.
I could really see myself doing it.

3. What did the kid Pirate say to the Mom Pirate?
Arrrn’t you glad you met Dad?

4. How do astronomers organise a party?
They planet!

5. I made a soup entirely from ingredients extracted from the atmosphere…
It was a broth of fresh air!

6. When does a regular joke become a dad joke?
When it becomes apparent.

7. It wasn’t much fun when I broke my neck last year.
But now I can look back and laugh.

8. Anyone remember that chiropractor joke I shared?
It was about a weak back.

9. I recently visited the "World's Tiniest Wind Turbine" exhibit.
Honestly, not a big fan.

10. I can’t bring my dog to the pond anymore. The ducks keep attacking him.
Guess that’s what I get for getting a pure bread dog.

11. I only seem to get sick on weekdays.
I must have a weekend immune system.

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

13. Hey, Dad, did you get a haircut?
Nope, I got them all cut

14. Where do pigs like to relax?
In hammocks

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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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