What is the 4 digit number i...
[4005] What is the 4 digit number i... - What is the 4 digit number in which the first digit is one-fifth of the last, and the second and third digits are the last digit multiplied by 3? - #brainteasers #math #riddles - Correct Answers: 72 - The first user who solved this task is Djordje Timotijevic
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What is the 4 digit number i...

What is the 4 digit number in which the first digit is one-fifth of the last, and the second and third digits are the last digit multiplied by 3?
Correct answers: 72
The first user who solved this task is Djordje Timotijevic.
#brainteasers #math #riddles
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Two drunken men were driving h...

Two drunken men were driving home. The first started screaming: - Jim, watch out for the wall, watch out for the waaaaall! Baaaaam! They hit the wall. The next day in the hospital the first man asked his friend: - You good for nothing, I've been screaming for you to watch out, why didn't you? Jim answered him: - IT WAS YOU DRIVING!!!
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Jakob Steiner

Died 1 Apr 1863 at age 67 (born 18 Mar 1796).Swiss mathematician who was one of the greatest, contributors to projective geometry. He discovered the Steiner surface which has a double infinity of conic sections on it. The Steiner theorem states that the two pencils by which a conic is projected from two of its points are projectively related. He is also known for the Poncelet-Steiner theorem which shows that only one given circle and a straight edge are required for Euclidean constructions. His work included conic sections and surfaces, the theory of second-degree surfaces and centre-of-gravity problems. He developed the principle of symmetrization (1840-41). In 1848 he ws the first to define various polar curves with respect to a given curve, and introduced the “Steiner Curves.”«
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