Fill the Tanks

Assuming the water from the tap is pouring slower than it is flowing through the connecting tubes, which tank will get full first?

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I am making 2 assumptions: 1. The tanks don’t have lids (indicated by the open tops.) 2. The top of Tank 3 appears to be just a bit lower than tank 4. Give those assumptions, then Tanks 1, 2, and 4 will never fill. Tank 3 will start to overflow before tank 4 fills. The water levels in Tanks 2 and 4 will only ever reach as high as the top of tank 3. The water level in Tank 1 will only ever reach just high enough to pour into Tank 2. Take away assumption 2 so that Tanks 3… Read more »