Pentertain

Fifteen Minutes Impromptu Entertainment with Pen and Paper

1973
Written by Ken De Courcy
Work of Ken De Courcy
16 pages (Stapled), published by The Supreme Magic Company
Illustrated with drawings by Ken De Courcy
Language: English
9 entries
Cover photograph
Creators Title Comments & References Page AA Categories
Ken De Courcy Introduction
1
Ken De Courcy Pentertain introduction to routine
 		3
Ken De Courcy Only Heaven (and Einstein) Knows! mathematical puzzle with three chosen numbers at the points of a triangle, three sums end up to be equal
 		4
Ken De Courcy Everything is Relative forcing 34 in a 4x4 matrix with the numbers from one to sixteen
 		6
Ken De Courcy A Not-so-Proper Charlie unusual method to multiply two numbers by continuously dividing and multiplying them by two
Variations 7
Ken De Courcy The Chinese Check unusual method to multiply two numbers with some sort of grid
 		8
Ken De Courcy The Forgotten Phone Number subtraction of five-digit number with its reverse, oner figure chosen and others called out, chosen figure divined by another spectator via calculation
 		10
Ken De Courcy A Question of Degree method of multiplying 9 with every digit
 		13
Ken De Courcy A Last Word
16
Data entered by Denis Behr.
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