#1**+1 **

First find the number of ways to pick 2 boxes out of 5 distinct boxes where order doesn't matter. Call this number $A$. Next, find the number of ways to seat 3 people in a circle where two seatings are considered the same if one seating can be rotated or flipped in 3D into another. Call this number $B$. The answer is $A\cdot B$.

Bginner Jun 12, 2021