1. Startling
2. 6 (eleven = 6 letters, twelve = 6 letters)
3. Takes the goose across, goes back. Takes the fox across, takes the goose back. Takes the corn across, goes back alone and takes the goose across.
4. 7 jumps
5. The 11 toothpicks formed the word nine.
6. e n t (One, Two...