River Crossing Strategy with Lions and Wildebeest

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, including on the raft. The video explores different strategies and solutions, ultimately detailing an optimal solution that requires eleven crossings to get all animals across safely. The solution involves careful planning and decision-making to avoid any animal being eaten. The video concludes with the animals escaping the fire and reflecting on their alliance.

What is the main challenge the animals face in crossing the river?

• Ensuring lions do not outnumber wildebeest on either side

• Avoiding crocodiles in the river

• Crossing the river before the fire reaches them

• Finding a raft that can carry all animals at once

What is the maximum number of animals the raft can carry at one time?

• One

• Two

• Three

• Four

Why can't two wildebeest cross the river first?

• The remaining wildebeest would be outnumbered and eaten

• The raft can only carry one animal

• The wildebeest are afraid of water

• The lions would refuse to row the raft

What is the first successful move to start the crossing?

• Two lions cross first

• One lion crosses alone

• One lion and one wildebeest cross first

• Two wildebeest cross first

After the first crossing, what should happen next?

• The wildebeest returns alone

• The lion returns alone

• Both animals return

• Two lions cross next

What is the next move after two lions are on the left bank?

• One wildebeest returns

• Two wildebeest cross

• One lion and one wildebeest cross

• Two lions return

Why can't two lions return to the right bank after two wildebeest cross?

• They would outnumber the wildebeest on the right bank

• The raft is broken

• The lions refuse to row back

• The wildebeest are blocking the way

What is the final step to get all animals across safely?

• The wildebeest return to the right bank

• Two lions cross together

• One lion returns and brings the other lions one by one

• All animals cross at once

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

• Nine

• Ten

• Twelve

• Eleven

What remains uncertain after the animals cross the river?

• Whether the raft will be used again

• If the fire will reach the river

• Whether the crocodiles will attack

• How long the alliance between lions and wildebeest will last