Two of the cups will fill up, however, due to the angle of tube...

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    Two of the cups will fill up, however, due to the angle of tube 3, number two cup will fill up as will cup 7, however only if there is enough water to overflow,

    As the central tube on number 5 tube the water will fill to the right exit point above tube 3, the water will exit there with only water remains in the central tube at number 5,
 
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