TED-ED: Can you solve the river crossing riddle? - Lisa Winer

The video presents a problem where three lions and three wildebeest must cross a crocodile-infested river using a raft that can carry two animals at a time. The challenge is to ensure that lions never outnumber wildebeest on either side of the river. The video explores different crossing options and provides a step-by-step solution to get all animals across safely in eleven trips. The solution involves strategic planning to avoid any situation where the lions could eat the wildebeest. The video concludes with the animals safely reaching the other side, highlighting the importance of careful decision-making.

What are the possible combinations of animals that can cross the river first?

How many total trips were needed to get all animals across the river safely?