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Tartaglia's method for solving cubics, which he eventually explained to Cardano.
A boy gives 11 coins of equal denomination to a man, and the man finds that their total value in yen is 4 less than his age.
Paul Halmos Photograph Collection, page 3: M. Auslander, R. Baer, Banchoff, C. N. Moore, I. A. Barnett, P. Erdos, and Lida Barrett
Now there are six-headed four legged animals and four-headed two-legged birds. Find the total number of animals and birds.
This is the title page of the French edition of Leonhard Euler's text on Algebra. The text was originally published in German in 1767 in St. Petersburg and then translated into French in 1795.
A ladder has 100 steps. On the first step sits 1 pigeon; on the second, 2; on the third, 3; and so on up to the hundredth. How many pigeons in all?
Four episodes in the history of geometry are discussed, where dynamic geometry helps in understanding the ideas.
Two men have a certain amount of money. The first says to the second, "If you give me 5 denari, I will have 7 times what you have left."
A horse halving its speed every day runs 700 miles in 7 days.
What proportions of sugar at 8 cents, 10 cents and 14 cents per pound, will compose a mixture worth 12 cents per pound?

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