Calculate the number 2070
[5188] Calculate the number 2070 - NUMBERMANIA: Calculate the number 2070 using numbers [7, 5, 6, 4, 93, 221] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 15 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 2070

NUMBERMANIA: Calculate the number 2070 using numbers [7, 5, 6, 4, 93, 221] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 15
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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There is no language wherein a double positive can form a negative

A linguistics professor was lecturing to his English class one day. “In English,” he said, “a double negative forms a positive.

In some languages, though, such as Russian, a double negative is still a negative.

However, there is no language wherein a double positive can form a negative.”

A voice from the back of the room piped up, "Yeah, right."

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E-Lamp

In 1992, the E-Lamp, an electronic electrodeless 20-year lightbulb, was announced by Pierre Villere. The E-Lamp is illuminated when radio waves excite a phosphor coating, an efficient process that can save as much as 75% of lighting costs. The E-lamp technology was licensed from Diablo Research Corporation that developed it in the late 1980s. However, they were not approved for residential use in the U.S. In Apr 1994, General Electric (G.E.) Lighting announced that "the world's first practical compact high-tech induction reflector lamp" would be on the market in Europe within weeks using the tradename Genura. It is smaller than the incandescent reflector lamp it replaces.
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