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Thursday, April 3, 2008

Solution Day

Here's the problem from Tuesday's post:

"A farmer is taking a fox, a chicken, and a bushel of corn to the market. On his way, there is a river he has to cross. He can only fit himself and one other in his row boat. He can't leave the fox and the chicken together, or the fox will eat the chicken. He also can't leave the chicken and the corn together, or the chicken will eat the corn. How can he get everything across and make it to the market with everything he started with?"

Solution:
First, the farmer will cross the river with the chicken. He'll leave the chicken on the other side and cross back to pick up the corn (he could pick up either the corn or the fox as you'll learn in a moment). Then he'll cross back with the corn and leave it on the other side. Then, the farmer will take the chicken back to the first side of the river and leave it there. Then he'll take the fox to the other side, cross back alone, and cross the river a final time with the chicken again. Get it?

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