[mothered]

yes i change the theme now looking some better than previous one , one i notice same problem bro when you click on home only 3 post showing even on new theme what this man ..>>?? when i search this problem on youtube they were saying happened becasue of large post bl bla...  

I don't see how the size of the post would cause this.

Just to experiment, add another "Jump break" (Read more) to one of the posts, and see whether It Increases the number on the homepage.