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Radmila Gavrilov

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182. Nenad Golubovic 19
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last 3 solved tasks
Look at the series (1, 5, 15, 30, 150, 450, 900, 4500, ?), determine the pattern, and find the value of the next number!
What number should fill in the blank? (8, 43, 11, 41, ?, 39, 17)
What will be the missing number? (9, 19, 40, ?, 170)

Adrien-Marie Legendre

Born 18 Sep 1752; died 9 Jan 1833 at age 80. French mathematician who contributed to number theory, celestial mechanics and elliptic functions. In 1794, he was put in charge of the French government's department that was standardizing French weights and measures. In 1813, he took over as head of the Bureau des Longitudes upon the death of Lagrange, its former chief. It was in a paper on celestial mechanics concerning the motion of planets (1784) that he first introduced the Legendre Polynomials. His provided outstanding work on elliptic functions (1786), and his classic treatise on the theory of numbers (1798) and also worked on the method of least squares.«[DSB gives date of death 9 Jan 1833. EB gives 10 Jan 1833.]

Husband and wife are waiting a...

Husband and wife are waiting at the bus stop with their nine children. A blind man joins them after a few minutes. When the bus arrives, they find it overloaded and only the wife and the nine kids are able to fit onto the bus.
So the husband and the blind man decide to walk. After a while, the husband gets irritated by the ticking of the stick of the blind man as he taps it on the sidewalk, and says to him, "Why don't you put a piece of rubber at the end of your stick? That ticking sound is driving me crazy."
The blind man replies, "If you would've put a rubber at the end of YOUR stick, we'd be riding the bus ... so shut up."
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