Depends on the flow rate, but most likely 1 if the tap is running fast. Otherwise I have no idea.
Also, what's with these comments? What's so special/clever about this pic?
this post was submitted on 30 Nov 2024
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Ha. Trick question! All of them are already full of air, and niether the flow rate nor the direction (or lack) of gravity was specified anyway. You lose. :)
The number of people in these comments who already understand the self-siphoning nature of water with zero explanation required makes me so proud to be here among them.
I think, Number 7 will stay empty for some time.
This diagram scratches my brain real good, especially thinking about it getting filled
7