puzzles

1. while facing east you turn to your left and walk 10 yards; then turn to your left and walk 10 yards and now you turn 45'0 towards your right and go straight to cover 25 yards .Now,in what direction are you from your starting point?
2. A placed three sheets with two carbons to get two extra copies of original.Then he decided to get more carbon copies ,and folded the papers in such a way that the upper half of the sheets were on top of the lower half. Then he typed.How many carbon copies did he gets?
3. A set of 8 books is arranged in orderly fashion on a shelf.Each book has 100 pages making 800 pages in all.A worm starting on the first page of the first book eats through the last page of the last book?How many pages has it eaten?
4. in a row of six persons, D and C are immediate neighbours of E. B is a neighbour of A only . A is the fourth from F. Who are on the two end points?
5. What is the smallest number of ducks that could swim in this formation--two ducks in front of a duck ,two ducks behind a duck and a duck between two ducks?