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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Ferdinand von Lindemann

Died 6 Mar 1939 at age 86 (born 12 Apr 1852).Carl Louis Ferdinand von Lindemann was a German mathematician who was the first to prove that is transcendental (it is not a solution of any algebraic equation with rational coefficients). This finally established the insoluble nature of the classical Greek mathematical problem of squaring the circle (constructing a square with the same area as a given circle using ruler and compasses alone.) In 1873, Lindemann visited Hermite in Paris and discussed the methods which Hermite had used in his proof that e, the base of natural logarithms, is transcendental. Following this visit, Lindemann was able to extend Hermite's results to show that was also transcendental (1882).«[DSB and other sources give death date as 6 Mar 1939. EB gives 1 Mar 1939.]
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