Question: What is the best way to keep your hat from falling off your head?

Question: In a marble hall as white as milk, Lined with skin as soft as silk, Within a fountain crystal clear, A golden orb does appear, There are no doors to this stronghold, Yet thieves break in and steal the gold. What am I?

Question: What has 6 wheels and flies?

Question: There are 6 sisters. Each sister has 1 brother. How many brothers are in the sisters' family?

Question: How much does the brick weigh if a brick weighs 1kg plus a half brick?