SOLUTION: Dear Tutors...Please help Fifteen friends went to a party. They all decide to exchange email addresses with eachother. How many total email addresses were exchanged if everyon

Algebra ->  Problems-with-consecutive-odd-even-integers -> SOLUTION: Dear Tutors...Please help Fifteen friends went to a party. They all decide to exchange email addresses with eachother. How many total email addresses were exchanged if everyon      Log On