Where does “鶴亀算” come from?
鶴亀算 (Japanese) comes from Japanese 鶴, from Middle Chinese 鶴.
鶴亀算 (Japanese): a common mathematical riddle in Japan. It is often stated as follows: "There are some cranes and some turtles. The count of heads is X and the count of legs is Y. How many cranes and turtles are there respectively?" The answer is that the number of cranes is 2X-(Y/2) and the number of turtles is (Y/
Definitions
- a common mathematical riddle in Japan. It is often stated as follows: "There are some cranes and some turtles. The count of heads is X and the count of legs is Y. How many cranes and turtles are there respectively?" The answer is that the number of cranes is 2X-(Y/2) and the number of turtles is (Y/
Ancestry of “鶴亀算”, step by step
鶴亀算 traces back through 3 separate lines of ancestry.
via Japanese 亀
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Japanese | 亀 | a tortoise or turtle; a drunkard; a 家紋 with... |
| 2 | Middle Chinese | 龜 | — |
via Japanese 算
| Step | Language | Word | Meaning |
|---|---|---|---|
| 1 | Japanese | 算 | — |