There are 7 people and 4chairs. In how many ways people can occupy the chairs?
Choose the correct choice
A) 760  B) 840  C) 560  D) 740  E) 800
total people = 7   total chairs = 4   1st chair can be occupy in 7ways   2nd chair can be occupy in 6ways   3rd chair can be occupy in 5ways   4th chair can be occupy in 4ways   total number of ways = 7*6*5*4= 
<gadget id="calculator">7*6*5*4</gadget>
<output>840</output>
840 ways   correct option is 840
<result>B</result>
There are 7 people and 4chairs. In how many ways people can occupy the chairs?