There are 12 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.
A) 12	B) 18	C) 24	D) 36	E) 48
Note that each handshake includes two people.   The total number of handshakes is  12*3/2= 
<gadget id="calculator"> 12*3/2</gadget>
<output>18</output>
18   The answer is 18.
<result>B</result>
There are 12 people in a room. If each person shakes hands with exactly 3 other people, what is the total number of handshakes?