View Larger Image How many books? How many books can you put in an empty backpack? How many books? Comments comments By admin|2017-10-05T12:51:40+03:00August 12th, 2016|Puzzles, Uncategorized|0 Comments Share This Story, Choose Your Platform! facebooktwitterlinkedinredditwhatsapptumblrpinterestvkEmail About the Author: admin Related Posts Falling egg! Gallery Falling egg! Four bottles with milk Gallery Four bottles with milk Two tablets? Gallery Two tablets?