Calculate the number 1459
[7309] Calculate the number 1459 - NUMBERMANIA: Calculate the number 1459 using numbers [2, 5, 2, 1, 99, 391] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once. - #brainteasers #math #numbermania - Correct Answers: 3
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Calculate the number 1459

NUMBERMANIA: Calculate the number 1459 using numbers [2, 5, 2, 1, 99, 391] and basic arithmetic operations (+, -, *, /). Each of the numbers can be used only once.
Correct answers: 3
#brainteasers #math #numbermania
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A little boy comes down for br...

A little boy comes down for breakfast and his mother asks if he had done his chores. “Not yet,” says the little boy.
His mother tells him that until he completes them, he won't be getting any breakfast.
Well, he's a little angry, so he goes to feed the chickens and kicks one. He goes to feed the cows, and kicks a cow as well. He goes to feed the pigs, and he kicks a pig.
He goes back in for breakfast and his mother gives him a bowl of dry cereal. “How come I don't get any eggs and bacon? Why don't I have any milk in my cereal?” he asks.
“Well,” his mother says, “I saw you kick a chicken, so you don't get any eggs for a week. I saw you kick the pig, so you don't get any bacon for a week either. I also saw you kick the cow, so for a week you aren't getting any milk.”
Just then, his father comes down for breakfast and kicks the cat half way across the kitchen.
The little boy looks up at his mother with a smile and says, “Are you going to tell him, or shall I?”
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Hans Joachim Pabst von Ohain

Born 14 Dec 1911; died 13 Mar 1998 at age 86.German aeronautical engineer who designed the first operational jet engine. Ohain, at age 22, conceived his theory of jet propulsion (1933) because to fly faster, airplanes could fly higher for lower air resistance, but there, propellers and piston engines worked badly. He saw turbojets as a solution, and took out his first patent on the gas-turbine jet engine in 1935, four years after Frank Whittle. By Sep 1937, Ohain had a hydrogen-fueled bench model producing a 250-km thrust. He designed the HeS3b turbojet engine that powered the first experimental jet aircraft, the He178, on its historic maiden flight at a top speed of about 350 mph on 27 Aug 1939, near Rostock, Germany. Whittle's first jet flew later, in 1941. His continued work on the gas-turbine engine during World War II resulted in abandonment of the centrifugal flow concept, and adoption of the axial flow compressor type engine. After WW II, Ohain worked for the U.S. airforce (1947-79). In 1945, he emigrated to the U.S. and became an engineer for the U.S. Air Force at its engine development centre. In 1956, Von Ohain became Director of the famed Air Force Aeronautical Research Laboratory.
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