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Calculate the number 2102

NUMBERMANIA: Calculate the number 2102 using numbers [8, 3, 1, 6, 23, 195] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.

Correct answers: 0

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Switching channels

An old married couple was at home watching TV.

The husband had the remote and was switching back and forth between a fishing channel and the porn channel.

The wife became more and more annoyed and finally said:

"For god's sake! Leave it on the porn channel. You already know how to fish!"

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Isaac Roberts

Born 27 Jan 1829; died 17 Jul 1904 at age 75.Welsh astronomer who was a pioneer in photography of nebulae. In 1885 he had built an observatory with a 20 inch reflector. Using this instrument Roberts was to make considerable progress in the newly developing science of Astro-photography. He photographed numerous celestial objects including Orion Nebula on 15 Jan 1986 (90 minute exposure) and Pleiades. Undoubtedly his finest work was a photograph showing the spiral structure of the Great Nebula in Andromeda, M31 on 29 Dec 1888. In addition to his contribution to astro-photography, Roberts also devised a machine to be used to engrave stellar positions on copper plates, known as the Stellar Pantograver. He was also a geologist of some considerable note.

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