Originally posted by davegage
off my head, without probing too deeply, my guesses would be:
1. the two 5 cm holes drain first, followed by the 7 cm hole, followed by the three 4 cm holes.
2. you would need 14 bags.
3. i think it's kind of a trick question because the dog will always have some finite energy to keep moving and will in theory never tire completely, but in the lim ...[text shortened]... rever, he will move 200 miles into the forest.
i'm not positive if these are correct or not.
well, number 3 can't be correct if you read the riddle carefully.
The forest is 337 miles long, wich mean that the dog can't run more then 168,5 miles into the forest. Further then that, the dog will be moving away from the centre of the forest, wich means he'll move OUT of the forest from then.