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How Many Handshakes Are Going to Be There?
If we have three people and we all shake hands, how many handshakes are going to be there? I'll let me diagram this out. So what I've drawn here is two circles connected by a line. And the second thing that I've drawn right next to it is three circles each connected by a lines. The first one would be one. A second is two,. Third one is six, right? And just based on those two numbers, one, two and six, do you want to guess what the fourth one will be? Oh, yeah, no worries. I was never good at these.