My current blog was approved by AdSense a long time ago. It only had a few articles, I think around 9 and they were all decent length.
Now, my friend has recently applied for the Google AdSense for his own blog which focuses on animals. He has 14 articles, all between 500-1000+ words, pictures inside them and everything. Sadly, he got rejected and the reason was "insufficient content". I know that he can reapply but I'm wondering how much content does he truly need? I had less than him and got approved. I'm confused.