There are 10 people and 7 chairs. In how many different ways people can occupy the chairs?	Choose the correct choice from the following options:  A) 800  B) 810  C) 820  D) 830  E) 840
number of ways = 10*9*8*7= 
<gadget id="calculator">10*9*8*7</gadget>
<output>5_040</output>
5040   Answer is 820
<result>C</result>
There are 10 people and 7 chairs. In how many different ways people can occupy the chairs?