These problems should help you understand the basic ideas behind trees.
| Sub-Section | Problems | Count |
|---|---|---|
| 11.1.1 | 1, 2, 3bc, 4, 7, 8, 9ab, 12-15 all, 18bcd, 19 | 13 |
| 11.2.4 | 1bc, 2, 3bc, 4-8 all, 9bcd, 10, 11, 12bc, 14bc, 15, 17-21 all | 19 |
| 11.4.3 | 2-5 all, 7, 8, 13ab, 15ab, 16ac, 17bc, 18, 19, 20 | 13 |
| Total | 45 |