Evaluate 30!/28!  Choose the most appropriate option.
A) 720  B) 600  C) 870  D) 910  E) 650
we have 30!/28! = 30*29*28!/28! = 30*29= 
<gadget id="calculator">30*29</gadget>
<output>870</output>
870   Answer is 870
<result>C</result>
Evaluate 30!/28!