Water Flow Puzzle: Find the Solution

• Water Flow Analysis:
  • Since Bucket 3 is directly connected to the faucet, it will fill first as there are no other paths that the water has to take.
  • Once Bucket 3 fills, water will then flow to Bucket 6.
  • After Bucket 6 fills, it will subsequently fill Bucket 9.
  • Finally, Bucket 9 will fill Bucket 7.

Conclusion:

Bucket 3 will fill first when water is turned on at the faucet.