| Title | Page | |
|---|---|---|
| The Man with the Hoe | 103 | |
| A Marking Puzzle | 120 | |
| Match Trick | 192 | |
| A Merry Christmas | 43 | |
| A Message in a Bottle. | 33 | |
| Military Tactics | 21 | |
| Milkman's Puzzle | 52 | |
| The Milkman's Retort | 135 | |
| MISCHIEVOUS BUNNY PUZZLE | 131 | |
| The Missing Number | 94 | |
| Missing Numbers Puzzle | 88 | |
| Missing Words. | 121 | |
| Missing-Word Puzzle. | 124 | |
| Mixed Teas | 141 | |
| The Monad Puzzle | 26 | |
| The Monastary Window | 163 | |
| The Monkey's Puzzle | 24 | |
| The Moon Problem | 145 | |
| The Moon Problem | 144 | |
| More Trouble | 176 | |
| Mother's Jam Puzzle | 62 | |
| The Moving Day Puzzle | 82 | |
| Mrs. Pythagoras' Puzzle | 66 | |
| Multiplication and Addition | 78 | |
| Mysterious Communication | 92 | |
| The Mystery of the Boarding House Pie | 18 |