Logic Riddles

Question: You have 7 oranges on a plate, and there are 7 children. After you give 1 orange to each child, there is still 1 orange left on the plate. How is this possible? Source: www.puzzlevilla.com

Question: How do you make the number ONE disappear?

Question: What has been found to have no beginning, middle or end; it eats away everything, but makes life for us all?

Question: Twelve pears hanging high, twelve men passing by. Each took a pear and left eleven hanging there. How can this be?

Question: My name is Ruger. I live in a farm. There are four other dogs in the farm with me. Their names are Snowy, Flash, Speed, and Brownie. Who is the fifth dog?