There are 7 people and 4 chairs. In how many different ways people can occupy the chairs?  Choices
A) 840	B) 1020	C) 712	D) 516	E) 360
number of ways = 7*6*5*4= 
<gadget id="calculator">7*6*5*4</gadget>
<output>840</output>
840   840nswer is 840
<result>A</result>
There are 7 people and 4 chairs. In how many different ways people can occupy the chairs?