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Calculate the number 1309

NUMBERMANIA: Calculate the number 1309 using numbers [5, 3, 5, 6, 81, 730] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 31

The first user who solved this task is Sanja Šabović.

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40 year curse

An old man goes to the Wizard to ask him if he can remove a curse he has been living with for the last 40 years.

The Wizard says: "Maybe, but you will have to tell me the exact words that were used to put the curse on you.

The old man says without hesitation: "I now pronounce you man and wife."

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Baron William Thomson Kelvin

Died 17 Dec 1907 at age 83 (born 26 Jun 1824). Irish physicist, mathematician and engineer who became an influential physicist, who has been described as the Newton of his era. Born as William Thomson in Ireland. At Glasgow University, Scotland, he was a professor for over half a century. The name he made for himself was more than just a temperature scale. His activities ranged from being the brains behind the laying of a transatlantic telephone cable, to attempting to calculate the age of the earth from its rate of cooling. In 1892, when raised to the peerage as Baron Kelvin of Largs, he had chosen the name from the Kelvin River, near Glasgow. He is often described as a Scottish scientist because of his life career spent in Glasgow, but late in life, in a lecture in 1883, he referred to himself as an Irishman.

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