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Curiosa Mathematica, Part II
Seventy-two mathematical problems that the author worked out in his head while lying awake at night, with their answers and solutions.
Curiosa Mathematica, Part II is "Pillow-Problems Thought Out During Wakeful Hours". After the prefaces and introduction it gives the problems, then the answers, then the full solutions, in separate chapters.
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- Bought on its own: yours to keep.
Read a passage
Find a general formula for two squares whose sum = 2.
In a given Triangle to place a line parallel to the base, such that the portions of sides, intercepted between it and the base, shall be together equal to the base.
If the sides of a Tetragon pass through the vertices of a Parallelogram, and if three of them are bisected at those vertices: prove that the fourth is so also.
In a given acute-angled Triangle inscribe a Triangle, whose sides make, at each of the vertices, equal angles with the sides of the given Triangle.
A bag contains one counter, known to be either white or black. A white counter is put in, the bag shaken, and a counter drawn out, which proves to be white. What is now the chance of drawing a white counter?
Given lengths of lines drawn, from vertices of Triangle, to middle points of opposite sides, to find its sides and angles.
Given 2 adjacent sides, and the included angle, of a Tetragon; and that the angles, at the other ends of these 2 sides, are right: find (1) remaining sides, (2) area.
Some men sat in a circle, so that each had 2 neighbours; and each had a certain number of shillings. The first had 1/ more than the second, who had 1/ more than the third, and so on. The first gave 1/ to the second, who gave 2/ to the third, and so on, each giving 1/ more than he received, as long as possible. There were then 2 neighbours, one of whom had 4 times as much as the other. How many men were there? And how much had the poorest man at first?
Contents
- 01Preface to Fourth Edition.
- 02Preface to Second Edition.
- 03Introduction.
- 04Contents.
- 05Subjects Classified.
- 06Pillow-Problems.
- 07Chapter I.
- 08Chapter II.
- 09Chapter III.
- 10Works by C. L. Dodgson.
About this edition
- Author
- Lewis Carroll
- Era
- Modern (c. 1800–1945)
- Reading level
- Advanced: for close, demanding reading
- Formats
- EPUB, PDF
- Length
- 121 pages
- This edition
- Modern Philosophers