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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 73 of 126
Table of Contents

CROOKED ANSWERS.

                         ---
                        | 0 |
 17. No y exist.  i.e.  |---|
                        | 0 |
                         ---

                            ---
                           |   |
 18. Some y are x'.  i.e.  |---|
                           | 1 |
                            ---
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