Ten people will be working together on a committee. If each person shakes all the others' hands only once, how many total handshakes will there be? Use the table below to develop a formula to predict the number of handshakes for n people. |
People | Handshakes |
1 |
0 |
2 |
|
3 |
|
4 |
|
: |
|
10 |
|
: : |
|
n |