In a word.... "None".
Unless you have a 1st generation Kindle with Android 3 or lower, there IS NO Flash Player for it. Android dropped ALL support for Flash last Summer. Their reason was the same one thsat Apple gave nearly eight years ago "Playing/viewing Flash content is processor consumptive and it drains batteries. In addition, it shortens battery life in mobile devices."
Android recommends using "Dolphin" or "Puffin" as your browser because they use "server side" rendering of Flash content to reduce the load on your Android device. BOTH are free in the GooglePlay store.