There is only one distribution/version of Linux?

Keep practicing — related questions

• Which is not the community version among Linux Distros?
• Which of the following is not a linux distribution?
• It is not possible to install Linux on the system which has MS Windows Vista.
• Which of the following is not a Linux distribution?
• How many different Linux flavour Are available?
• Linux is a kernel?
• UNIX is a single user operating environment
• Linux is