Farmer Joe 1.5
Farmer Joe had a fox, a chicken, and some chicken feed with him. While coming back from the town village, he had to cross a river in order to get home. The only way home is on a small boat which can only hold Farmer Joe and one of the three items. If the fox is left with the chicken, the fox will eat the chicken. If the chicken is left with the chickenfeed, the chicken will eat the chickenfeed. How can Farmer Joe bring all three items across the river without any of the items being harmed? Farmer Joe can bring items back and forth from shore to shore, i.e., he brings the fox to one side of the river, then brings him back to the other side again. In the answer, 1= Chicken, 2= Fox, and 3=Chickenfeed.
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Since the fox can be trusted with the chickenfeed, you bring the chicken over first. Then, you can either bring over the fox or the chickenfeed, since there will be only one item left at the shore. From there, after bringing over either the fox or the chickenfeed, you then bring the chicken back over because the chicken can't be trusted with either the fox or the chickenfeed. From there, you bring over either the fox or the chickenfeed depending on which you brought over first, and then finally you bring over the chicken one last time.