BRAIN TEASERS

# Calculate the number 1882

NUMBERMANIA: Calculate the number 1882 using numbers [9, 3, 7, 2, 10, 638] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania

### Don't Step on the Ducks

Three guys die together in an accident and go to heaven. When they get there, St. Peter says, "We only have one rule here in heaven: Don't step on the ducks!"
So they enter heaven, and sure enough, there are ducks all over the place. It is almost impossible not to step on a duck, and although they try their best to avoid them, the first guy accidentally steps on one.
Along comes St. Peter with the ugliest woman he has ever seen. St. Peter chains them together and says, "Your punishment for stepping on a duck is to spend eternity chained to the ugly woman!"
The next day, the second guy steps accidentally on a duck, and along comes St. Peter, who doesn't miss a thing, and with him is another extemely ugly woman. He chains them together with the same admonishment as for the first guy.
The third guy has observed all this and not wanting to be chained for all eternity to an ugly woman, is very, VERY careful where he steps. He manages to go months without stepping on any ducks, but one day St. Peter comes up to him with the most gorgeous woman he has ever laid eyes on: a very tall, tan, curvaceous, sexy blonde. St. Peter chains them together without saying a word.
The guy remarks, "I wonder what I did to deserve being chained to you for all of eternity?"
She says, "I don't know about you, but I stepped on a duck!"
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### Robert D. Maurer

Born 20 Jul 1924.American research physicist, who with his colleagues at Corning Glass Works, Dr. Donald B. Keck and Dr. Peter Schultz invented fused silica optical waveguide - optical fiber. This was a breakthrough creating a revolution in telecommunications, capable of carrying 65,000 times more information than conventional copper wire. In 1970, Maurer, Keck, and Schultz solved a problem that had previously stumped scientists around the world. They designed and produced the first optical fiber with optical losses low enough for wide use in telecommunications. The light loss was limited to 20 decibels per kilometer (at least one percent of the light entering a fiber remains after traveling one kilometer). He retired in 1989.
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