• One end of each string is at point Y (the top), and the other is at point X (the bottom).
• First, two of the ends at point X are randomly tied together. Then two more are tied together, and then the last two.
• Next, two ends at point Y are randomly tied together. Then, two more are tied together, and then the last two.
Determine the probability that all the strings will be tied together in one large loop.
