A military commander has to choose 2 soldiers out of a company of 4 for guarding the headquarters. How many different group combinations of 2 does he have to choose from?	Select.
A) 4  B) 10  C) 12  D) 15  E) 35
A military commander has to choose 2 soldiers out of a company of 5.   different group combinations of 2   He can do this in 5C2 ways     5*4/2*1= 
<gadget id="calculator">  5*4/2*1</gadget>
<output>10</output>
10 ways   ANSWER:10
<result>B</result>
A military commander has to choose 2 soldiers out of a company of 4 for guarding the headquarters. How many different group combinations of 2 does he have to choose from?