There are 9 people and 7 chairs. In how many different ways people can occupy the chairs? Choose the most appropriate option.
A) 405
B) 504
C) 404
D) 505
E) 506
number of ways = 9*8*7= 
<gadget id="calculator">9*8*7</gadget>
<output>504</output>
504   Answer is 504
<result>B</result>
There are 9 people and 7 chairs. In how many different ways people can occupy the chairs?