Answer:
What goes up the hill and down the hill, And spite of all, yet stand still?
4 rubber ducks were floating in the bathtub, 2 floated away and 2 drowned. How many ducks are still alive?
The yellow house has yellow window, the red house has red windows, what colour windows does the green house have?
No matter how terrible things get for the people of the Arctic, they will not eat a penguin. Why not?
When does 4 - 1 = 5 ?
I can be found in water but never wet