Question

__________ is a free and open source operating system for smart phones. *



Windows

Android

Phablet

Unix

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Answer 1

It's no exaggeration to say that open source operating systems rule the world of mobile devices. Android is still an open source project, after all. But, due to the bundle of proprietary software that comes along with Android on consumer devices, many people don't consider it an open source operating system.

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Answer 2

Answer : Android

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