2. Xiao Ming has several 1 yuan, 2 yuan, and 5 yuan RMB notes. He wants to use no more than 10 RMB notes to buy a kite priced at 18 yuan, and he must use at least two different denominations of RMB. How many different ways can he pay?
(A) 3
(B) 9
(C) 11
(D) 8
【Answer】 $\mathrm{C}$
【Question Type】Odd: List Enumeration
【Analysis】
\begin{tabular}{|c|c|c|c|}
\hline 5 Yuan & 2 Yuan & 1 Yuan & Total Number of Notes \\
\hline 3 & 0 & 3 & 6 \\
\hline 3 & 1 & 1 & 5 \\
\hline 2 & 4 & 0 & 6 \\
\hline 2 & 3 & 2 & 7 \\
\hline 2 & 2 & 4 & 8 \\
\hline
\end{tabular}
\begin{tabular}{|c|c|c|c|}
\hline 2 & 1 & 6 & 9 \\
\hline 2 & 0 & 8 & 10 \\
\hline 1 & 6 & 1 & 8 \\
\hline 1 & 5 & 3 & 9 \\
\hline 1 & 4 & 5 & 10 \\
\hline 0 & 8 & 2 & 10 \\
\hline
\end{tabular}

A total of 11.