100 Numerical Games
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| Google books | books.google.com |
|---|---|
| Originally published | 1976 |
| Authors | Pierre Berloquin |
| Genres | Puzzle |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2225430 |
About 100 Numerical Games
Follow the hour hand and minute hand of a clock for 24 hours. How many times do they form a right angle?Timothy's house has several rooms, each of which has an even number of doors, including doors that lead outside. . . .