Fiendishly Difficult Math Puzzles

Fiendishly Difficult Math Puzzles



Ivan Moscovich "Fiendishly Difficult Math Puzzles"
St--ling Pub | ISBN: 0806982705 | 1991 | Djvu | 64 pages | 3,6 MB

To start things going, let's look at the different approaches that can be useful in solving puzzles.
First, the logical approach. Logic is always valuable, as it helps you work things out sequentially, using information received to progress step by step to the answer.
This is especially true when puzzles tend to be oriented toward mathematics and concentrate on using numbers for simple calculations, or on ordering arrangements of objects or figures. Examples of this can be found in the games Magic Numbers.
In problem solving, there may also be a need for an indirect' approach, whereby you arrive at an answer by perceiving and thinking about a subject in a way you have never done before. This depends on how you think normally, of course, and so for some people it may be helpful for certain puzzles, and for others for different ones.
The first part of Match Blocks is solved most simply, quickly, easily and elegantly' using an 'indirect' approach of this kind.
The visual approach is also important, especially in this book because all the puzzles are presented in visual terms and require initial visual omprehension (or conceptualization) to be combined with understanding the text of the problem. This is particularly the case with the tricky
puzzle set as The 18-point Problem.
In general, the math puzzlers in this book are of four types. They are concerned with:
1. simple calculation using patterns, objects or symbols;
2. spotting serial links and connections;
3. the laws of chance and probability - particularly in assessing the odds for or against specific events or results occurring;
4. ordering, combining or grouping objects or figures, following a defined rule, to achieve a stated target.

Examples of all four types are given on the following pages, together with the answers.
See if you can solve them first without looking at the answers - then go on to enjoy the rest of the book!

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