Calculate 18+6+20
[255] Calculate 18+6+20 - FUNNY MATH: Calculate 18+6+20 (Author: Ruzica Pavlovic) - #brainteasers #math - Correct Answers: 25 - The first user who solved this task is Sanja Šabović
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Calculate 18+6+20

FUNNY MATH: Calculate 18+6+20 (Author: Ruzica Pavlovic)
Correct answers: 25
The first user who solved this task is Sanja Šabović.
#brainteasers #math
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What happened?

"What happened?" asked the hospital visitor to the heavily bandaged man sitting up in bed.
"Well, I went down to Alton towers and decided to take a ride on the Loch Ness Monster. As we came up to the top of the highest loop, I noticed a little sign by the side of the track. I tried to read it, but it was very small and I couldn't make it out. I was so curious that I decided to go round again, but we went by so quickly that I couldn't see what the sign said.
"By now, I was determined to read that sign, so I went round a third time. As we reached the top, I stood up in the car to get a better view."
"And did you manage to see what the sign said this time?" asked the visitor.
"Yes," he said sheepishly, "Remain seated at all times!"
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Xerography

In 1938, xerography was demonstrated by Chester F. Carlson. With his assistant, Otto Kornei, Carlson used a sulphur coating on a zinc plate, vigorously rubbed with a handkerchief to apply an electrostatic charge. A glass slide was prepared using India ink to write "10-22-38 ASTORIA," then laid on the sulphur surface in a darkened room. After illuminating them with a bright incandescent lamp for a few seconds, the slide was removed. When lycopodium powder was sprinkled on the sulphur surface and blown off, there remained a near-perfect image of the writing. Permanent copies were made by transferring the powder images to wax paper and heating the sheets to melt the wax. Xerox is a term coming from "xerography" which means dry writing and is a trademark.
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