In Facebook if you check a friend’s number of photos or albums that he/she has uploaded you will realize the number which is show by Facebook differ from what is visible to you and you can count. From Facebook help centre and other guides I found the 2 reasons below.
- Your friend has limited the audience who can view particular photos or videos.
- About tagged photos:
- Either your friend or your friends of friend limited the audience.
- The friend, who had tagged your friend in a photo, now has inactive account.
Even in my own profile I can see this discrepancy between the real number of albums I have and the number Facebook displays. I think Facebook counts Deleted albums and includes the number of deleted albums in the number it displays on your profile.
What do you think?