Number of problems (n) | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
Random index (RI) | 0 | 0.58 | 0.90 | 1.12 | 1.24 | 1.32 | 1.41 | 1.45 | 1.51 |