Skip to main content
All books

Book

Available now

Curiosa Mathematica, Part II

Lewis Carroll

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.

What you get

  • The book as EPUB, PDF, delivered to your library after payment.
  • 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

  1. 01Preface to Fourth Edition.
  2. 02Preface to Second Edition.
  3. 03Introduction.
  4. 04Contents.
  5. 05Subjects Classified.
  6. 06Pillow-Problems.
  7. 07Chapter I.
  8. 08Chapter II.
  9. 09Chapter III.
  10. 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