Write three different types of android operating system?

1.	Write three different types of android operating system?
Answer» Android version\xa0indicates the\xa0version\xa0of\xa0Android\xa0platform. The bigger the\xa0version\xa0number is, the newer the\xa0Android\xa0is. Android\xa0has code names for different\xa0versions\xa0too. They are all confectionery-themed (Pie, Donut, Lollipop, Marshallow, etc.) and have been in alphabetical order starting from\xa0Android\xa0Cupcake 1.5.\xa0Till now 15\xa0Versions\xa0of\xa0Android\xa0are fully released and the 16th Version (Android\xa0P) is partially released (Developer Preview 1). The first commercial version,\xa0Android\xa01.0, was released in September 2008.

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