How many ways of making request are there?

How many ways of making request are there? There are many ways of defining success. There are a lot of ways of making friends.=There are ( )( )( 翻译There are many ways of working out the problem. there are many ways of()out the problem. there are many ways of skinning a cat的意思 There are many ways of _____ out the problem. How many types of games are there? How many types of masturbation are there? how many kinds of poputions are there? how many kinds of pollution are there? how many are there