Calculate the number 399
[5696] Calculate the number 399 - NUMBERMANIA: Calculate the number 399 using numbers [7, 6, 7, 2, 12, 110] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 16 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 399

NUMBERMANIA: Calculate the number 399 using numbers [7, 6, 7, 2, 12, 110] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 16
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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The Jewish Boy and the Muslim Boy

David, a Jewish boy, and Ali, a Muslim boy, are having a conversation. Ali: I'm getting operated on tomorrow. David: Oh? What are they going to do? Ali: Circumcise me! David: I had that done when I was just a few days old. Ali: Did it hurt? David: I couldn't walk for a year!
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Carl Gustaf Mosander

Born 10 Sep 1797; died 15 Oct 1858 at age 61.Swedish chemist and mineralologist; whose work revealed the existence of numerous rare-earth elements with closely similar chemical properties. In 1839 he discovered lanthanum (La) which is used as a component of misch metal (used for making lighter flints) and rare-earth compounds containing lanthanum are extensively used in carbon lighting applications, especially by the motion picture industry for studio lighting and projection. He discovered other rare earth metals: erbium (Er) in 1842 and terbium (Tb) in 1843. Erbium oxide is rose-pink, and it is used to make pink glass and pink potter's glaze. Terbium oxide has potential as an activator for green phosphors used in colour televisions tubes.[Image: Lanthanum ore.]
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