Question

Everybody in a room shakes hands with each other the total number of handshakes is 66 the total number of person in the room is?

Answer 1

Hola ^_^

Your answer is
We know that there are 66 handshakes

handshakes between two people

so there were 66×2= 132 people in that room.

Answer 2

Answer:

12 people

Step-by-step explanation:let the total no. of people in the room be n

C(n,2)=66

n!/(n-2)!2!=66

by solving the above equation u will surely get your answer

plzz.... mark it brainliest