The title is from 33IQ.com
With only an ordinary pen, without the help of any other tool (other than one's own hand), is it possible to write out the circled number 9, the character "(9)", in a single stroke on an ordinary blank printing paper? What to do?
Note: The outer ring and the number are not connected, and the upper part of the 9 must be closed.
<h1>The answer to the previous issue was announced</h1>
Only the E-style can be stacked. In such a hall, events of different sizes are often organized, and the number of chairs used is always changing, so the difficulty of storage becomes the key.
