Chances for 2 person share the same birthday in a certain amount of people.
| People | Mathematically (365 days) | Practically (365 days) | Offset |
|---|---|---|---|
| 3 | 0.008204 | 0.003071 | +0.005133 |
| 5 | 0.027135 | 0.021282 | +0.005853 |
| 10 | 0.116948 | 0.119989 | -0.003041 |
| 23 | 0.507297 | 0.482247 | +0.02505 |
| 75 | 0.999719 | 0.999776 | -0.000057 |
| 100 | 0.999999 | 1 | -0.000001 |
Each practical result was run for 3 times by using main.js in this repository, each time has 1000 birthday samples.