At the end of a business conference the nine people present all shake hands with each other once. How many handshakes will there be altogether ?
Select the correct option.
A) 20 B) 45 C) 36 D) 90 E) 95
number of handshakes = 9362= 9*8/2= 
<gadget id="calculator">9*8/2</gadget>
<output>36</output>
36   ANSWER:36
<result>C</result>
At the end of a business conference the nine people present all shake hands with each other once. How many handshakes will there be altogether ?