
Transcribers note: Many of the puzzles in this book assume a familiarity with the currency of Great Britain in the early 1900s. As this is likely not common knowledge for those outside Britain (and possibly many within,) I am including a chart of relative values.
AMUSEMENTS IN MATHEMATICS - by - HENRY ERNEST DUDENEY
1917
PREFACE
AMUSEMENTS IN MATHEMATICS.
ARITHMETICAL AND ALGEBRAICAL PROBLEMS.
MONEY PUZZLES.
AGE AND KINSHIP PUZZLES.
CLOCK PUZZLES.
LOCOMOTION AND SPEED PUZZLES.
A lively assortment of mathematical riddles awaits, blending time‑tested classics with the author’s own inventive twists. The puzzles are presented with a breezy, almost conversational tone, inviting listeners to think as they would over a cup of tea while still feeling the subtle pull of logic and number‑sense. Whether you’re a seasoned puzzler or just enjoy a good brain teaser, the collection offers enough variety to keep the mind active without demanding specialist training.
To make sense of many of the challenges, the book supplies a handy guide to the pre‑decimal British monetary system—pennies, shillings, pounds, and their assorted fractions. This historical backdrop adds charm and a gentle learning curve, as you translate old‑style values into modern calculations. The problems span simple arithmetic, clever algebra, and geometric tricks, each punctuated with witty commentary that makes the reasoning process as enjoyable as the solution itself.
Language
en
Duration
~14 hours (860K characters)
Publisher of text edition
Project Gutenberg
Credits
Produced by Stephen Schulze, Jonathan Ingram and the Online Distributed Proofreading Team at https://www.pgdp.net
Release date
2005-09-17
Rights
Public domain in the USA.

1857–1930
Best known for turning logic puzzles and mathematical games into popular entertainment, this English writer helped bring recreational mathematics to a wide audience. His puzzle collections remain lively, clever, and surprisingly fresh.
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