Calculate the number 5647
[4857] Calculate the number 5647 - NUMBERMANIA: Calculate the number 5647 using numbers [2, 4, 9, 7, 42, 487] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 17 - The first user who solved this task is Djordje Timotijevic
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Calculate the number 5647

NUMBERMANIA: Calculate the number 5647 using numbers [2, 4, 9, 7, 42, 487] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 17
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #numbermania
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Horse Pulls The Car


An out-of-towner drove his car into a ditch in a desolated area. Luckily, a local farmer came to help with his big strong horse named Buddy.
He hitched Buddy up to the car and yelled, "Pull, Nellie, pull." Buddy didn't move.
Then the farmer hollered, "Pull, Buster, pull." Buddy didn't respond.
Once more the farmer commanded, "Pull, Jennie, pull." Nothing.
Then the farmer nonchalantly said, "Pull, Buddy, pull." And the horse easily dragged the car out of the ditch.
The motorist was most appreciative and very curious. He asked the farmer why he called his horse by the wrong name three times.
The farmer said, "Oh, Buddy is blind, and if he thought he was the only one pulling, he wouldn't even try!"
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Donald William Kerst

Born 1 Nov 1911; died 19 Aug 1992 at age 80.American physicist who invented the betatron (1940), the first device to accelerate electrons (“beta particles”) to speeds high enough to have sufficient momentum to produce nuclear transformations in atoms. The electrons are accelerated by electromagnetic induction in a doughnut-shaped (toroidal) ring from which the air has been removed. This type of particle accelerator can produce high-energy electrons up to 340 MeV for research purposes, including the production of high-energy X-rays. For such high velocities, the magnetic field is increased to match the relativistic increase in mass of the particles. During WW II, Kerst worked at Los Alamos on tue atomic bomb project. He completed the largest betatron in 1950, at the University of Illinois.
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