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Calculate the number 444

NUMBERMANIA: Calculate the number 444 using numbers [1, 3, 1, 9, 79, 178] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 43

The first user who solved this task is Eugenio G. F. de Kereki.

#brainteasers #math #numbermania

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Walking economy

A guy is walking down the street with his friend. He says to his friend, "I'm a walking economy."

His friend replies, "How's that?"

"It's like this -- my hair line is in recession, my stomach is a victim of inflation, and the combination of these factors is putting me into a deep depression."

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Pietro Angelo Secchi

Born 18 Jun 1818; died 26 Feb 1878 at age 59.Pietro Angelo Secchi was an Italian priest and astronomer, a Jesuit, who made the first survey of the spectra of over 4000 stars and suggested that stars be classified according to their spectral type. He studied the planets, especially Jupiter, which he discovered was composed of gasses. Secchi studied the dark lines which join the two hemispheres of Mars; he called them canals as if they where the works of living beings. (These studies were later continued by Schiaparelli.) Beyond astronomy, his interests ranged from archaeology to geodesy, from geophysics to meteorology. He also invented a meteorograph, an automated device for recording barometric pressure, temperature, wind direction and velocity, and rainfall.[DSB gives birth date 18 Jun 1818. EB gives 29 Jun 1818.]

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