A military commander has to choose 2 soldiers out of a company of 9 for guarding the headquarters. How many different group combinations of 2 does he have to choose from?
Choices:  A) 4  B) 15  C) 36  D) 27  E) 35
A military commander has to choose 2 soldiers out of a company of 9.   different group combinations of 2   He can do this in 9362 ways     9*8/2*1= 
<gadget id="calculator">  9*8/2*1</gadget>
<output>36</output>
36 ways   ANSWER:36
<result>C</result>
A military commander has to choose 2 soldiers out of a company of 9 for guarding the headquarters. How many different group combinations of 2 does he have to choose from?