16. This you should always keep - no one else wants it.
17. When is it easiest to see through a man?
18. What is the end to which we all like to come?
19. It wasn't my sister, nor my brother, but still was the child of my father and mother. Who was it?
20. What is everyone in the world doing at the same time?
21. What can be measured, but has no length, width or height?
22. Why is the world like a faulty jig saw puzzle?
23. What do you break by saying just one word?
24. What flies when it's on and floats when it's off?
25. What has a big mouth, yet never speaks?
26. What question can you never answer "yes" to?
27. How can you tell the difference between two trees?
28. What can't you see that is always before you?
29. What can you hold without ever touching or using your hands?
30. What is neither inside the house, outside the house, but no house is complete without it?