Calculate the number 3188
[6010] Calculate the number 3188 - NUMBERMANIA: Calculate the number 3188 using numbers [9, 2, 4, 9, 56, 235] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 12 - The first user who solved this task is Nílton Corrêa De Sousa
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Calculate the number 3188

NUMBERMANIA: Calculate the number 3188 using numbers [9, 2, 4, 9, 56, 235] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 12
The first user who solved this task is Nílton Corrêa De Sousa.
#brainteasers #math #numbermania
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The interested doctor

A concerned woman phones a doctor and says, "Doctor, I'm worried about my husband. He thinks he's a dog!"

"I'm coming over right away," the doctor says.

When the doctor arrives, the woman opens the door, and her husband, on all four, starts wagging his bottom and licking the doctor's hand.

"Interesting", the doctor says, startled. "I'll examine him. Make him lie down on the sofa."

"Doctor", the woman says, "I can't! He's not allowed the sofa!"

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First U.S. safety razor patent

In 1880, the first U.S. patent for a safety razor was issued to brothers Frederick and Otto Kampfe of New York, who made and sold their invention (No. 228,904). Their patent described their razor to be “simple and durable in construction, of small first cost, compact in form, and adapted to be used without soiling the fingers of the user.” The design was a“hollow metallic blade holder with... handle and a flat plate..., to which the blade is attached by clips and a pivoted catch, said plate having bars or teeth at its lower edge.” Its lower plate was formed to be a receptacle for the hair and soap removed during the shaving operation. The blade was removeable and would be put in a separate holder to enable sharpening as needed. Two decades later, King Camp Gillette invented the disposable safety razor blade.«
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