Good Riddles

 
The 6 sisters (medium)

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

Question: I can be dropped from the tallest of buildings and survive,but drop me from the smallest ship and I won't.What am I?

Riddle #3363 (medium)

Question: When you're given one, you'll have either two or none?

Riddle #543 (medium)

Question: How many letters are in the answer to this riddle?

Riddle #55 (easy)

Question: Can you think of a crime that is punishable if attempted but not punishable is actually committed?