Test Your Logic: 50 Puzzles in Deductive Reasoning

George J. Summers

106 pages, parution le 01/01/1972

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Résumé

When Adrian, Buford, and Carter eat out, each orders either ham or pork. If Adrian orders ham, Buford orders pork. Either Adrian or Carter orders ham, but not both. Buford and Carter do not both order pork. Who could have ordered ham yesterday, pork today?

It is a rare event when a book of truly new logical puzzles is printed, but George Summers has now twice produced such an event. In New Puzzles in Logical Deduction (Dover 22089-3) he created 50 truly new puzzles. With new turns of thought, new subtleties of inference, he has here created 50 more! Even if you have seen the basic situations before, you have never before had a chance to test your logic against the precision or scope of these.

The puzzles range in difficulty from the relatively simple examples at the beginning of the book to others, tricky, complex, and subtle enough to test the expert. Most are set in story form. Some are concerned with establishing identities from minimal clues. Others are based on cryptarithmetic, or the identification of numbers. While an occasional problem involves algebra, no special knowledge is required for most, no mathematics beyond junior high school, no training in traditional or symbolic logic. All that one need bring to them is the ability to think clearly and consecutively, and to pursue the puzzles in the most downright logical way.

Among the strongest features of Summers' book is the solutions section, which takes the reader through every step and every implication of the solutions. After seeing one solution, you cannot help but test your logic against the next puzzle in the book. There are even hints printed at the bottom of the page to stall somewhat the irresistible urge to turn to the answers. To our knowledge this material is unique.

Contents

Ham Yesterday, Pork Today
Val, Lynn, and Chris
The Hospital Staff
The Woman Freeman Will Marry
Six A's*
Not Remarkably Rich
The Tennis Player
The Round
ThreeD's*
Lawyers' Testimony
Spot Orientation
Cora's Death
A Chair for Mr. Lancer
Decapitation of a Factor*
The Singleton
The Sisters
The Second Tournament
The Absent Digit*
Interns' Week
The Lead
The Drummer
Middle Apartment
The Three Towns*
Face Orientation
Change Required
The Doctor
Decapitation of a Product*
The Health Club
Dana's Death
The Last to Row across Rapid River
The Victim
The Smallest Sum*
Lee, Dale, Terry, and Marion
The Punched-out Numeral
The Professor
Three J's*
Escape from a Singleton
The Killer
No Spade Played
The Extortionist
The Unplaced Digits*
Identified as the Criminal
The Last to Row across Limpid Lake
Card Number Six
The Shortest Time*
An Extraordinarily Empathic Man
Old Maid
The Smiths
The Hired Man
More Types of Crime

Caractéristiques techniques

	PAPIER
Éditeur(s)	Dover
Auteur(s)	George J. Summers
Parution	01/01/1972
Nb. de pages	106
Format	13,7 x 21,5
Couverture	Broché
Poids	139g
Intérieur	Noir et Blanc
EAN13	9780486228778
ISBN13	978-0-486-22877-8