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Which number comes next in the following sequence?

Which number comes next in the following sequence 9487, 7228, 1416, ?

Correct answers: 89

The first user who solved this task is Sanja Šabović.

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Three drunks hailed a taxi...

Three drunks hailed a taxi. The taxi driver seeing that they were so wasted when they got in, he just switched on the engine and switched it off, and said we are here. The 1st guy gave him money, 2nd guy said thanks, but the 3rd guy slapped him. The taxi driver was stunned because he was hoping that none of them would have realized the car didn't move an inch. So what was that for, he asked. Control your speed next time, you almost killed us.

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Hans Joachim Pabst von Ohain

Died 13 Mar 1998 at age 86 (born 14 Dec 1911).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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