Good Old Fashioned Challenging Puzzles and Perplexing Mathematical Problems by Mrs. Henry Dudeney
English | Feb 12, 2007 | ISBN: 1840245573 | 160 Pages | PDF | 4 MB
English | Feb 12, 2007 | ISBN: 1840245573 | 160 Pages | PDF | 4 MB
Contains mathematical brain teasers, first published in 1917, as the puzzles regularly appeared in newspapers and magazines. This book includes new twists on old puzzles, as well as other puzzles – some reasonably easy and others very hard.
