There are 18 people in a room. If each person shakes hands with exactly 3 other people, what is the total number of handshakes?  Choose the correct choice from the following choices:	A) 21	B) 24	C) 27	D) 45	E) 54
Note that each handshake includes two people.   The total number of handshakes is  18*3/2= 
<gadget id="calculator"> 18*3/2</gadget>
<output>27</output>
27   The answer is 27.
<result>C</result>
There are 18 people in a room. If each person shakes hands with exactly 3 other people, what is the total number of handshakes?