Answer Number 6: Take the following steps:

1. Fill the 5-gallon container
2. Pour the water from the 5-gallon container into the 3-gallon container. (2 gallons remain in the 5-gallon container)
3. Empty the 3-gallon container.
4. Pour the 2 gallons from the 5-gallon container into the 3-gallon container
5. Fill the 5-gallon container.
6. Finally, pour the water from the 5-gallon container into the 3-gallon container until it is full, and you are left with exactly 4 gallons in the 5-gallon

Answer Number 7: He will plant the trees in a five-point star formation

Related Riddles

• 
  3 Short Puzzles That Are Often Played by Insurance Users
• 
  3 Riddles about a man and a car accident attorney’s office
• 
  Hard Riddles 2021 With Logic Question
• 
  The 11 Thanksgiving Jokes And Riddles
• 
  Riddles For Kids – Get Them To Think
• 
  60 Riddles For High School Students