Calculate the number 2650
[1335] Calculate the number 2650 - NUMBERMANIA: Calculate the number 2650 using numbers [4, 1, 7, 8, 19, 501] 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 Sanja Šabović
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Calculate the number 2650

NUMBERMANIA: Calculate the number 2650 using numbers [4, 1, 7, 8, 19, 501] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 25
The first user who solved this task is Sanja Šabović.
#brainteasers #math #numbermania
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Heads or tails

The blonde reported for her university final examination that consists of yes/no type questions.

She takes her seat in the examination hall, stares at the question paper for five minutes and then, in a fit of inspiration, takes out her purse, removes a coin and starts tossing the coin, marking the answer sheet: Yes for heads, and no for tails.

Within half an hour she is all done, whereas the rest of the class is still sweating it out.

During the last few minutes she is seen desperately throwing the coin, muttering and sweating.

The moderator, alarmed, approaches her and asks what is going on.

"I finished the exam in half an hour, but now I'm rechecking my answers."

Submitted by Calamjo

Edited by Curtis

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Walter Noddack

Died 7 Dec 1960 at age 67 (born 17 Aug 1893).Walter Karl Friedrich Noddack was a German chemist who discovered the element rhenium (Jun 1925) in collaboration with his wife Ida Tacke. In 1922, he began a long search for undiscovered elements. After three years, the careful fractionation of certain ores yielded element 75, a rare heavy metallic element that resembles manganese. Named rhenium after the Rhine River, it was the last stable element to be discovered. Noddack is also remembered for arguing for a concept he called allgegenwartskonzentration or, literally, omnipresent concentration. This idea, reminiscent of Greek philosopher Anaxagoras, assumed that every mineral actually contained every element. The reason they could not all be detected was they existed in too small quantities.
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