## Entertaining Mathematical PuzzlesOnly an elementary knowledge of math is needed to enjoy this entertaining compilation of brain-teasers. It includes a mixture of old and new riddles covering a variety of mathematical topics: money, speed, plane and solid geometry, probability, topology, tricky puzzles and more. Carefully explained solutions follow each problem. 65 black-and-white illustrations. |

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### Contents

I | 1 |

III | 3 |

IV | 4 |

V | 6 |

VI | 10 |

VII | 12 |

VIII | 13 |

IX | 15 |

XXX | 55 |

XXXI | 57 |

XXXII | 59 |

XXXIII | 63 |

XXXIV | 65 |

XXXVI | 67 |

XXXVII | 69 |

XXXVIII | 71 |

X | 17 |

XI | 19 |

XII | 21 |

XIII | 24 |

XIV | 25 |

XVI | 27 |

XVII | 29 |

XVIII | 31 |

XIX | 33 |

XX | 35 |

XXII | 45 |

XXIV | 47 |

XXV | 49 |

XXVI | 51 |

XXVII | 52 |

XXVIII | 53 |

XXXIX | 73 |

XL | 75 |

XLII | 77 |

XLIII | 79 |

XLIV | 82 |

XLV | 85 |

XLVI | 87 |

XLVIII | 89 |

XLIX | 92 |

L | 94 |

LI | 96 |

LII | 98 |

LIII | 99 |

LV | 101 |

LVI | 111 |

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### Common terms and phrases

A. T. Mahan alike answer arithmetic Available in U.S. average ground speed average speed binary number boys called Captions capture the goose CATALOG OF DOVER cigarettes circle classic coins color copyright-free cube curve Dave Phillips digits dime dots DOVER BOOKS draw E. A. Wallis Budge Eadweard Muybridge edition English translation exactly four GUSTAV STICKLEY half a basketball illustrations inches king knots Lewis Carroll Louis Slobodkin Martin Gardner match MATHEMATICAL PUZZLES mathematicians mazes miles an hour minutes to catch Morris Kline moves number of pieces ounces paint pencil pennies photographs plane geometry play rationally poems problem round trip SAM LOYD scooter second player self-congruent shown in Figure side simple small squares socks SOLUTION solve SONGS spot stories strategy strip strokes sweater T. W. Rolleston tetrominoes theory three cats tions toast toaster total profit triangle turn