More Mathematical Puzzles of Sam Loyd
★“我买鸡蛋时,付给杂货店老板 12
美分,”一位厨师说道,“但是由于嫌它们太小,我又叫他无偿地添加了两只鸡蛋给我。这样一来,每打(12
只)鸡蛋的价钱就比当初的要价降低了 1 美分。”厨师买了多少只鸡蛋?
萨姆·劳埃德(1841~1911),世界上少数几个伟大的数学趣题家之一,...
1846-1849
By Elizabeth Davis Bancroft
LETTER: TO W.D.B. AND A.B. LIVERPOOL, October 26, 1846
My dear sons: Thank God with me that we are once more on TERRA FIRMA. We
arrived yest...
by Wilkie Collins (1824-1889)
(after the edition of Chatto & Windus, London, 1879)
CHAPTER I
In the year 1860, the reputation of Doctor Wybrow as a London physician
reached its h...