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nydus/The Game of LogicPublic

This instructional book presents a logic game played with a diagram and nine counters. It explains how to express propositions through the relationship between things and their attributes.

Page 90 of 126
Table of Contents

CROOKED ANSWERS.

                                 ---------------
                                | 0     |     0 |
                                |    ---|---    |
                                |   |   |   |   |
 16.  All m' are y';      i.e.  |---|---|---|---|
      No x are m'.              |   |   |   |   |
                                |    ---|---    |
                                | 0     |     1 |
                                 ---------------

                                ---------------
                               | 0     |     0 |
                               |    ---|---    |
                               |   | 1 | 0 |   |
 17.  All x are m;       i.e.  |---|---|---|---|
      All m are y.             |   |   | 0 |   |
                               |    ---|---    |
[See remarks on No. 7, p. 60.] |       |       |
                                ---------------
90