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Calculate the number 670

NUMBERMANIA: Calculate the number 670 using numbers [5, 8, 9, 6, 93, 100] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 2

#brainteasers #math #numbermania

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Dan Naturman: At a Job Interview

Heres an example of something you never say at a job interview: Can I have my resume back? Its my only copy.

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Henri-Alexandre Deslandres

Born 24 Jul 1853; died 15 Jan 1948 at age 94.French astrophysicist who invented a spectroheliograph (1894) to photograph the Sun in monochromatic light (about a year after George E. Hale in the U.S.) and made extensive studies of the solar chromosphere and solar activity. He worked at the Paris and Meudon Observatories. His investigation of molecular spectra produced empirical laws presaging those of quantum mechanics. He observed spectra of planets and stars and measured their radial velocities of, and he determined the rotation rates of Uranus, Jupiter and Saturn (shortly after James E. Keeler).

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