Brain teaser

in science •  7 years ago 

Look at this picture and tell which tank will fill first.FB_IMG_1515273419902.jpg

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Tank 6 will fill first because the path is closed on the left of tank 1 and the same on the right of tank 3.

That depends on the supply flow rate and many other variables. Tank 1 could fill before water gets to tank 5 at all.

It looks to me that tank 5 will fill first. Though given the general level of my success in doing brain puzzles I have probably got it wrong.