Five people come to a party and shake hands with each other if each person shakes the hand of every other person how many handshakes occur
Accepted Solution
A:
Let's name each person as A,B,C,D,E A-B A-C A-D A-E A does 4 handshakes B-C B-D B-E B does 3 handshakes C-D C-E C does 2 handshakes D-E D does 1 handshake