【Question 12】The clock strikes once at 1 o'clock, twice at 2 o'clock, three times at 3 o'clock, $\cdots \cdots$, and so on. Following this pattern, from 1 o'clock to 12 o'clock, and then starting again at 13 o'clock by striking once, twice at 14 o'clock, $\cdots \cdots$, and so on, how many times does the clock strike in a day up to 24 o'clock?
$$
\begin{aligned}
(1+2+3+\ldots+12) \times 2 & =(1+12) \times 12 \div 2 \times 2 \\
& =13 \times 12 \\
& =156 \text { (down) }
\end{aligned}
$$