Another Problem For The Math Whizz

[GarGuy]

There are 12 people at a board meeting. Everyone shakes hands with everyone else one time. How many hand shakes were there?

[bwssr]

132

[TxAg]

66

[lab man]

66

[wtx223]

66

this

[Roger]

66

[Patton]

66
12! /
(10! x 2)

I think..

[Roger]

edit: I was too slow. There were no replies when I opened it.

Not sure why this ended up as a separate post and not the edit.

[wtb90]

132

[Jaybo31]

66

[snappertapper]

66

bingo

[be12hunt]

I got 1,584...nope

[Playa]

Wouldn't it be 144?

12 x 12= 144

[laredoarcher]

132

This

[bwssr]

Wouldn't it be 144?

12 x 12= 144

(-) each who wont shake their own hand