How many possible cases are there such that 2 stocks are selected at random from 10 stocks?	Select
A) 35	B) 40	C) 45	D) 50	E) 55
Number of possible cases = 10c2   =10!/(8!*2!)   =10*9/2= 
<gadget id="calculator">10*9/2</gadget>
<output>45</output>
45   Answer 45
<result>C</result>
How many possible cases are there such that 2 stocks are selected at random from 10 stocks?