If a quality control check is made inspecting a sample of 2 light bulbs from a box of 12 lighbulbs, how many different samples can be chosen?	Choose the correct answer:
A) 6
B) 24
C) 36
D) 66
E) 72
Try using the formula for combinations:   n!/r!(n-r)!   12!/2!(12-2)!   12!/2!*10!    12*11/2*1= 
<gadget id="calculator"> 12*11/2*1</gadget>
<output>66</output>
66   ANSWER:66
<result>D</result>
If a quality control check is made inspecting a sample of 2 light bulbs from a box of 12 lighbulbs, how many different samples can be chosen?