Ta conference, 12 members shook hands with each other before & after the meeting. how many total number of hand shakes occurred?

N=n(n−1)÷2

For example there are 12 people he

So

N=12(12–1)÷2=132÷2=66

That's for once but they handshaked after the meeting so

66∗2=132

Hope this helps!

~LENA~

the answer is alpha particles hope i you

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >