Coach Pāṇini ® (@paninid@mastodon.world)

1d

The image features two men standing next to a payphone. The man on the left is wearing glasses and a white shirt, while the man on the right is holding a phone to his ear and has a slight scratch on his cheek. The background shows a street scene with a payphone booth and some signage. Below the image, there is a text overlay that reads: "You have a 5-gallon jug and a 3-gallon jug. Fill one with exactly 4 gallons of water to prevent a bomb from going off. There are no markings on the jugs. How do you get exactly 4 gallons of water into one of the jugs?"

Edited 1d ago

1d

@paninid fill 3 gallon jug. Pour into 5 gallon jug. Fill 3 gallon jug again. Pour until 5 gallon jug is full. Stop. 1 gallon is now in 3 gallon jug. Pour 5 gallon jug out. Pour 1 gallon from the 3 gallon jug into 5 gallon jug. Fill 3 gallon jug. Pour 3 gallon jug into 5 gallon jug. 4 gallons exactly. Besides whatever I spilled on myself during all the pouring.

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1d

@paninid
- start with both jugs empty
- fill 3gal jug
- pour 3gal into 5gal jug
- fill 3gal
- pour 3gal into 5gal until it's full (leaving 1 gallon in 3gal)
- empty 5gal jug
- pour 3gal into 5gal
- fill 3gal
- pour 3gal into 5 gal
- 5gal jug now has 4 gallons

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