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In the diagram shown above, all valves are initially closed. Gravity will cause the water to drain down into the barrels when the valves are opened. Which barrels will be filled if valves A, B, E, F, and G are opened and valves C and D are left closed?

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<img src='https://www.fatskills.com/images3/firefighter/508f8223408e0ee981c5408feeabe53e.gif' border='0' alt='0157-02.gif'/><br>In the diagram shown above, all valves are initially closed. Gravity will cause the water to drain down into the barrels when the valves are opened. Which barrels will be filled if valves A, B, E, F, and G are opened and valves C and D are left closed?






 
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