Question 4
Bitaro lives on floor 2 and Bibako on floor 3. A porter stacks their eight boxes in the elevator as shown. The elevator starts on floor 1 and goes to the floor belonging to the top box. At that stop the porter removes every consecutive top box for that beaver before going to the other beaver’s floor.
How many stops are needed to deliver all the boxes?
How many stops are needed to deliver all the boxes?