>>14280781>>14280824Of course, also in a high flow situation the water would hit the other side and flow into 4 and 3 due to surface tension, but the extra basin connected to 3 would prevent it from getting filled before 4, in a similar fashion to the low flow scenario.
Ergo, depending on the flow rate, it would be 5 OR 4, technically both are correct answers, as the flow isn't given.