Calculate the number 399
[7228] Calculate the number 399 - NUMBERMANIA: Calculate the number 399 using numbers [4, 2, 7, 4, 22, 670] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 2
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Calculate the number 399

NUMBERMANIA: Calculate the number 399 using numbers [4, 2, 7, 4, 22, 670] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 2
#brainteasers #math #numbermania
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A man was walking along a Cali...

A man was walking along a California beach and stumbled across an old lamp. He picked it up and rubbed it and out popped a genie.
The genie said "OK, OK. You released me from the lamp... blah, blah, blah... This is the fourth time this month and I'm getting a little sick of these wishes so you can forget about three. You only get one wish!"
The man sat and thought about it for a while and said, "I've always wanted to go to Hawaii but I'm scared to fly and I get very seasick. Could you build me a bridge to Hawaii so I can drive over there to visit?"
The genie laughed and said, "That's impossible! Think of the logistics of that. How would the supports ever reach the bottom of the Pacific?
Think of how much concrete... how much steel!! No. Think of another wish."
The man said OK and tried to think of a really good wish. Finally, he said, "I've been married and divorced four times. My wives always said that I don't care and that I'm insensitive. So, I wish that I could understand women...know how they feel inside and what they're thinking when they give me the silent treatment... to know why they're crying, to know what they really want when they say 'nothing' ... to know how to make them truly happy."
The genie said, "You want that bridge two lanes or four?"
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Tullio Levi-Civita

Born 29 Mar 1873; died 29 Dec 1941 at age 68.Italian mathematician who was one of the founders of absolute differential calculus (tensor analysis) which had applications to the theory of relativity. In 1887, he published a famous paper in which he developed the calculus of tensors. In 1900 he published, jointly with Ricci, the theory of tensors Méthodes de calcul differential absolu et leures applications in a form which was used by Einstein 15 years later. Weyl also used Levi-Civita's ideas to produce a unified theory of gravitation and electromagnetism. In addition to the important contributions his work made in the theory of relativity, Levi-Civita produced a series of papers treating elegantly the problem of a static gravitational field.«
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