Logic Riddles

Question: It takes ten men ten hours to build a certain wall. How long does it take five men to build the same wall?

Question: A man was shot while in his car. The person who shot him was outside of the car. However, all the windows were up and the doors locked. There were no holes in the car though.

How was he shot?

Question: Every time you lose something, you always find it in the very last place you would look.

Why is this?

Question: Why would a hair stylist rather cut the hair of two brunettes than one red head?

Question: What is the best way to stop a dog from barking in, and digging up the front yard?