The value of \(\sqrt{16+\sqrt{80+\sqrt{5000-4999}}}\) is:
Study the given pattern carefully and select the number that can replace the question mark (?) in it.
| 12 | 51 | 18 |
| 8 | 13 | ? |
| 26 | 12 | 12 |
| 30 | 50 | 23 |
If \( \frac{1}{8} \) of a pencil is black, half of the remaining pencil is yellow and the remaining 3\( \frac{1}{2} \)cm of the pencil is blue, then what is the total length of the pencil?