Measuring with containers
I’m working through how to measure 4 liters using a 5-liter and a 2-liter bucket, starting by filling the 5-liter bucket from the river.
Pouring and transferring
Pouring the 3 liters from the 5-liter to the 2-liter container, which fills it completely. This leaves 1 liter in the 5-liter container.
Adjusting my approach
I rechecked the steps: fill the 5-liter container, transfer to the 2-liter container until full, empty the 2-liter container, and transfer again to leave exactly 4 liters in the 5-liter container.
Confirming the outcome
I filled the 2-liter container with 2 liters, leaving 1 liter in the 5-liter container, which is exactly 4 liters. This checks out perfectly.
Confirming steps
I’m verifying the steps: initially 3 liters in the 5-liter container, the 2-liter container filled with 2 liters, then transferring the remaining 1 liter to the 2-liter container.
Thought about 2升和5升水桶玩法 for 16 seconds