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Calculate the number 320

NUMBERMANIA: Calculate the number 320 using numbers [8, 5, 7, 5, 57, 520] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 16

The first user who solved this task is Nílton Corrêa De Sousa.

#brainteasers #math #numbermania

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My wallet

My wallet is like an onion.

When I open it, it makes me cry.

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John Hughlings Jackson

Born 4 Apr 1835; died 7 Oct 1911 at age 76. English neurologist whose studies of epilepsy, speech defects, and nervous-system disorders arising from injury to the brain and spinal cord remain among the most useful and highly documented in the field. He was one of the first to state that abnormal mental states may result from structural brain damage. Jackson's epilepsy studies initiated the development of modern methods of clinical localization of brain lesions and the investigation of localized brain functions. His definition (1873) of epilepsy as "a sudden, excessive, and rapid discharge" of brain cells has been confirmed by electroencephalography, a method of recording electric currents generated in the brain.

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