What is the minimum requirement for applying to AdSense

Google AdSense -

Google AdSense is a free, simple way for website publishers of all sizes to earn money by displaying targeted Google ads on their websites.
AdSense is a free, simple way to make money online by placing ads on your website.

Why AdSense ?

The right ads for your Site.
Highest Paying.
Performance tools
Additional features

AdSense Requirements :-

Buy a Custom Domain :-

For applying for Google AdSense you should buy a custom domain (e.g. www.example.com )

Note- you must have access to edit the HTML source code of the site you submit for AdSense. If you submit a site you don't own and you won't be able to place the AdSense code on the site than your application will not be approved.

Your site complies with Google Adsense Policies:-

Your site or Blog should complies with Adsense polices.

Good content:-

You should have content and at least 15-20 well written posts.

Ensure you don't use Copyright content.

Your Blog / Site should been active for 6 months:-

In some locations, including China and India, we require your site to have been active for at least six months before it will be considered. We've taken this step to ensure the quality of our advertising network and protect the interests of our advertisers and existing publishers.Quality content is foremost important, blog's sometimes become eligible and get approved even if it isn't 4 to 6 months old only because of quality content, and some can't even after a year because of poor quality of content.

Anyways, the rule that applies to China, India and some other countries is that your blog / site needs to be at least 6 months old .