{"product_id":"2940013158498","title":"Amusemnts in Mathematics [Illustrated]","description":"This edition features\u003cbr\u003e • a linked Table of Contents and linked Index\u003cbr\u003e • 490 illustrations\u003cbr\u003e\u003cbr\u003eCONTENTS\u003cbr\u003ePREFACE \u003cbr\u003eARITHMETICAL AND ALGEBRAICAL PROBLEMS. \u003cbr\u003eMoney Puzzles. \u003cbr\u003eAge and Kinship Puzzles. \u003cbr\u003eClock Puzzles. \u003cbr\u003eLocomotion and Speed Puzzles. \u003cbr\u003eDigital Puzzles. \u003cbr\u003eVarious Arithmetical and Algebraical Problems. \u003cbr\u003eGEOMETRICAL PROBLEMS. \u003cbr\u003eDissection Puzzles. \u003cbr\u003eGreek Cross Puzzles. \u003cbr\u003eVarious Dissection Puzzles. \u003cbr\u003ePatchwork Puzzles \u003cbr\u003eVarious Geometrical Puzzles. \u003cbr\u003ePOINTS AND LINES PROBLEMS. \u003cbr\u003eMOVING COUNTER PROBLEMS. \u003cbr\u003eUNICURSAL AND ROUTE PROBLEMS. \u003cbr\u003eCOMBINATION AND GROUP PROBLEMS. \u003cbr\u003eCHESSBOARD PROBLEMS. \u003cbr\u003eThe Chessboard. \u003cbr\u003eStatical Chess Puzzles. \u003cbr\u003eThe Guarded Chessboard. \u003cbr\u003eDynamical Chess Puzzles. \u003cbr\u003eVarious Chess Puzzles. \u003cbr\u003eMEASURING, WEIGHING, AND PACKING PUZZLES. \u003cbr\u003eCROSSING RIVER PROBLEMS \u003cbr\u003ePROBLEMS CONCERNING GAMES. \u003cbr\u003ePUZZLE GAMES. \u003cbr\u003eMAGIC SQUARE PROBLEMS. \u003cbr\u003eSubtracting, Multiplying, and Dividing Magics. \u003cbr\u003eMagic Squares of Primes. \u003cbr\u003eMAZES AND HOW TO THREAD THEM. \u003cbr\u003eTHE PARADOX PARTY. \u003cbr\u003eUNCLASSIFIED PROBLEMS. \u003cbr\u003eSOLUTIONS. \u003cbr\u003eINDEX.\u003cbr\u003e\u003cbr\u003eFrom Preface:\u003cbr\u003eOn the question of Mathematical Puzzles in general there is, perhaps, little more to be said than I have written elsewhere. The history of the subject entails nothing short of the actual story of the beginnings and development of exact thinking in man. The historian must start from the time when man first succeeded in counting his ten fingers and in dividing an apple into two approximately equal parts. Every puzzle that is worthy of consideration can be referred to mathematics and logic. Every man, woman, and child who tries to \"reason out\" the answer to the simplest puzzle is working, though not of necessity consciously, on mathematical lines. Even those puzzles that we have no way of attacking except by haphazard attempts can be brought under a method of what has been called \"glorified trial\" — a system of shortening our labours by avoiding or eliminating what our reason tells us is useless. It is, in fact, not easy to say sometimes where the \"empirical\" begins and where it ends.\u003cbr\u003e\u003cbr\u003eWhen a man says, \"I have never solved a puzzle in my life,\" it is difficult to know exactly what he means, for every intelligent individual is doing it every day. The unfortunate inmates of our lunatic asylums are sent there expressly because they cannot solve puzzles — because they have lost their powers of reason. If there were no puzzles to solve, there would be no questions to ask; and if there were no questions to be asked, what a world it would be! We should all be equally omniscient, and conversation would be useless and idle.\u003cbr\u003e\u003cbr\u003eIt is possible that some few exceedingly sober-minded mathematicians, who are impatient of any terminology in their favourite science but the academic, and who object to the elusive x and y appearing under any other names, will have wished that various problems had been presented in a less popular dress and introduced with a less flippant phraseology. I can only refer them to the first word of my title and remind them that we are primarily out to be amused — not, it is true, without some hope of picking up morsels of knowledge by the way. If the manner is light, I can only say, in the words of Touchstone, that it is \"an ill-favoured thing, sir, but my own; a poor humour of mine, sir.\"\u003cbr\u003e\u003cbr\u003eAs for the question of difficulty, some of the puzzles, especially in the Arithmetical and Algebraical category, are quite easy. Yet some of those examples that look the simplest should not be passed over without a little consideration, for now and again it will be found that there is some more or less subtle pitfall or trap into which the reader may be apt to fall. It is good exercise to cultivate the habit of being very wary over the exact wording of a puzzle. It teaches exactitude and caution. But some of the problems are very hard nuts indeed, and not unworthy of the attention of the advanced mathematician. Readers will doubtless select according to their individual tastes.\u003cbr\u003e\u003cbr\u003eIn many cases only the mere answers are given. This leaves the beginner something to do on his own behalf in working out the method of solution, and saves space that would be wasted from the point of view of the advanced student. On the other hand, in particular cases where it seemed likely to interest, I have given rather extensive solutions and treated problems in a general manner. It will often be found that the notes on one problem will serve to elucidate a good many others in the book; so that the reader's difficulties will sometimes be found cleared up as he advances. Where it is possible to say a thing in a manner that may be \"understanded of the people\" generally, I prefer to use this simple phraseology, and so engage the attention and interest of a larger public. The mathematician will in such ca","brand":"VolumesOfValue","offers":[{"title":"Default Title","offer_id":47147500437744,"sku":"2940013158498","price":3.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940013158498_p0.jpg?v=1763577750","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940013158498","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}