Solve
-Within a Group Of \mathrm $\mathrm { n }$ People, the Number of Possible Handshakes

Multiple Choice

Solve.
-Within a group of $\mathrm { n }$ people, the number of possible handshakes, $N$ , is given by $\mathrm { N } = \frac { 1 } { 2 } \left( \mathrm { n } ^ { 2 } - \mathrm { n } \right)$ . How many handshakes are possible at a meeting if 16 people are present?

A) 136 handshakes
B) 120 handshakes
C) 240 handshakes
D) 112 handshakes