Solve the problem.
-Within a group of n people, the number of possible handshakes, N, is given by . At a party, everybody shakes hands with every other person. If the total number of handshakes is 210, how many people are at the party?
A) 20
B) 23
C) 21
D) 22

Question

Solve the problem.
-Within a group of n people, the number of possible handshakes, N, is given by  . At a party, everybody shakes hands with every other person. If the total number of handshakes is 210, how many people are at the party?
A) 20 
B) 23 
C) 21 
D) 22

Quizplus · Accepted Answer

The Answer of Solve the problem.
-Within a group of n people, the number of possible handshakes, N, is given by  . At a party, everybody shakes hands with every other person. If the total number of handshakes is 210, how many people are at the party?
A) 20 
B) 23 
C) 21 
D) 22

Solve the Problem. -Within a Group of N People, the Number of Possible