Logic Riddles

Question: An empty bus pulls up to a stop and 10 people get on. At the next stop 5 people get off and twice as many people get on as at the first stop. At the third stop 25 get off.

How many people are on the bus at this point?

Question: 7 months have 31 days. How many months have 28 days?

Question: There are 20 birds in a tree. A man comes and shoots one of the birds. How many birds are left?

Question: How many eggs can you put in an empty basket?

Question: Why can't Kevin, who is now living in Canada, not be buried in the USA?