Photo Exchange Probability Additional If each student in a class of 25 students exchanges photos with every other student in the class, how many photos are exchanged? (Source: Jon Basden) October 29, 2018/by Kym Welty http://intermath.org/wp-content/uploads/2018/03/logo.jpg 0 0 Kym Welty http://intermath.org/wp-content/uploads/2018/03/logo.jpg Kym Welty2018-10-29 13:15:112019-01-18 16:13:45Photo Exchange