Calculate the number 489
[7560] Calculate the number 489 - NUMBERMANIA: Calculate the number 489 using numbers [1, 1, 3, 3, 54, 544] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 1
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Calculate the number 489

NUMBERMANIA: Calculate the number 489 using numbers [1, 1, 3, 3, 54, 544] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 1
#brainteasers #math #numbermania
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A young man proposes marriage...

A young man proposes marriage to his sweetheart. The girl replies, "If I marry you, will you promise to give up smoking?"
"Yes, I will," came the reply.
"And drinking?"
"I will give up drinking as well."
"And going to the club with your cronies?"
"Yes, I will."
"And what else will you give up for my sake?" she asked finally.
"I have already given up the idea of marrying you."
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Auguste Laurent

Born 14 Nov 1807; died 23 Apr 1853 at age 45. French chemist who developed organic chemistry as a distinct science. For a while, he assisted Jean Dumas, and extended his work, understanding organic compounds as derivatives of hydrocarbon molecules. In crystallography he was influenced by René-Just Haüy. Laurent recognised that carbon atoms formed bonds based on a pyramid structure. Furthermore, against the opinion of many peers, he rejected the idea held by Jöns Berzelius that even organic molecules were formed from positively and negatively charged entities. Laurent showed (1836) that a supposedly positive-charge hydrogen atom could be replaced by a supposedly negative-charge chlorine atom. He recognised families of organic compounds with characteristic groups. He died in middle age from tuberculosis.«
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