Vice-presidente dos Correios, Eugenio Pinchemel mostra, no Facebook, a gastança em viagem paga pela estatal, que acumula prejuízos de mais de R$ 4 bilhões.
The idea of writing instruments designed to carry their own ink supply had been a theoretical idea, but it was not until the beginning of the 1700’s, that the theory was being put into practice.
The first fountain pen was designed by M.Bion a Frenchman in 1702, but it was more than a 100 years later in 1809. When American Peregrin Williamson, patented his design in 1809.
John Scheffer obtained a British patent for his design of 1819, for his idea of a half quill – half metal pen.
Then in 1831 John Jacob Parker patented his design of a self-filling pen, but it was the design of Lewis Waterman, who patented the first practical fountain pen in 1884.
If it had not been for early fountain-pen inventors; using the hollow channel of a birds feather to create an ink reservoir, to replace the constant use of dipping…
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- Uma lata de doces tem 16 balas de chocolates e 28 de morango.
a) Tirei uma bala à sorte e dei para minha irmã. Qual a probabilidade de eu ter dado uma bala de chocolate?
n(E) = 16 + 28 = 44
n(A) = 16
P(A) = 16/44
P(A) = 4/11
b) Depois de ter dado a primeira bala, tirei outra. Calcule a probabilidade de a segunda bala ser de chocolate,se:
*a primeira era de chocolate.
n(A) = 15
P(A) = 15/43
*a primeira era de morango.
n(E) = 43
n(A) = 16
P(A) = 16/43