Grocery Items Transaction Matrix with 100 rows and 100 columns by John Wingate August 3, 2018 written by John Wingate August 3, 2018 0FacebookTwitterPinterestLinkedinTumblrRedditStumbleuponWhatsappEmailLeave a Comment Cancel ReplySave my name, email, and website in this browser for the next time I comment.Please enter an answer in digits:6 + five =