What goes up and down the stai...
[2338] What goes up and down the stai... - What goes up and down the stairs without moving? - #brainteasers #riddles - Correct Answers: 41 - The first user who solved this task is Djordje Timotijevic
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What goes up and down the stai...

What goes up and down the stairs without moving?
Correct answers: 41
The first user who solved this task is Djordje Timotijevic.
#brainteasers #riddles
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6 Double Vodkas

A guy came into a bar one day and said to the barman, "Give me six double vodkas." 
The barman says, "Wow! You must have had one hell of a day." 
"Yes, I've just found out my older brother is gay." 
The next day the same guy came into the bar and asked for the same drinks. When the bartender asked what the problem was today, the answer came back, "I've just found out that my younger brother is gay too!" 
On the third day the guy came into the bar and ordered another six double vodkas. 
The bartender says, "Geez! Doesn't anybody in your family like women?". 
"Yeah, my wife..." 

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Jean-Gaston Darboux

Born 14 Aug 1842; died 23 Feb 1917 at age 74.French mathematician whose work on partial differential equations introduced a new method of integration (the Darboux integral) and contributed to infinitesimal geometry. He wrote a paper in 1870 on differential equations of the second order in which he presented the Darboux integral. In 1873, Darboux wrote a paper on cyclides and between 1887-96 he produced four volumes on infinitesimal geometry, including a discussion of one surface rolling on another surface. In particular he studied the geometrical configuration generated by points and lines which are fixed on the rolling surface. He also studied the problem of finding the shortest path between two points on a surface.«
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