You can find answers to riddles at GoodRiddlesNow.com or at BrainDen.com. Both GoodRiddlesNow and BrainDen have many different riddles to look up and see the answers to.
GoodRiddlesNow gives you the option to choose from many different categories of their riddles, from easy riddles to hard riddles, as well as riddles meant for kids. BrianDen only has two categories for you to choose from, which are logic riddles and new riddles. Both of these sites allow users to search for a specific riddle that you would like to find. You can find their search bars at the top of their pages.