Tree of Thoughts

Solve this logic problem: You have 2 chickens and 1 fox that need to be transported across a river using a boat. The boat can only carry one animal at a time. You cannot leave the fox alone with a chicken, as the fox will eat the chicken. Animals are unable to operate the boat; only you can do that. Determine the steps needed to safely transport all three animals to the other side of the river.

I have a 12 litre jug and a 6 litre jug and I want to measure 6 litres. How do I do it?

I put a diamond in a cup and then placed the cup upside down on my bed. Later I came back, took the cup, and put it in the fridge. Where is the diamond?

I left 5 items of clothing out to dry and it took 5 hours. How long would it take to dry 30 items of clothing?