I see ten entries both in IE and in Chrome,
The number you see depends on two things. First the setting on the dashboard, settings, reading, Syndication feeds show the most recent-I am not sure how high this goes. I know it will go to 99999.
The second thing is the browser. IE 10 and FF will show the number of posts you choose as in the previous paragraph. Chrome will only show 10 (but there may be setting that change that).