whatis command

I am a new Unix / Linux user. I am using whatis command to find man pages. But, I noticed that some man pages have a common names. For example, when I run whatis printf:

Outputs:

printf (1) - format and print data
printf (1p) - write formatted output
printf (3) - formatted output conversion
printf (3p) - print formatted output
printf [builtins] (1) - bash built-in commands, see bash(1)

How do I access overlapping man pages and what is the meaning of (1), (1p), (3), and so on?

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Q. I’ve CentOS 5 server located in a remote data center. How do I get more help about command and its syntax? A. Linux and UNIX comes with man (manual) pages. man command displays pages from reference manual. You can learn about command and it syntax. Each man page has following information: => Command name […]

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