ที่ผมคิดได้นะครับ(ไม่แน่ใจบางข้อ)\[\begin{array}{l}
1.\quad 51\\
2.\quad \left[ {1,2} \right] \cup \left( {3,9} \right) \cup \left( {9,\infty } \right)\\
6.\quad 45\\
8.\quad \sqrt {13 \times 12} \\
9.\quad \frac{{130}}{{33}}\\
12.\quad \frac{{1 + \sqrt 5 }}{2}\\
13.\quad 3 \times {10^8}\\
14.\quad \left\{ {\phi ,\left\{ \phi \right\}} \right\}\\
15.\quad 92\\
17.\quad True,valid\\
18.\quad 250\\
19.\quad 130\\
20.\quad 65
\end{array}\]