A store has 10 bottles of juice, including 6 bottles of apple juice. In the evening, 6 bottles of juice are sold one by one. What is the probability of selling 3 bottles of apple juice among the 6 bottles? Assume that every bottle has an equal chance of being bought.	Select
A) 2/11  B) 4/15  C) 6/17  D) 8/21  E) 10/25
The total number of ways to sell 6 bottles from 10 is 10C6 = 210.   The number of ways to sell 3 bottles of apple juice is 6C3*4C3 = 20*4= 
<gadget id="calculator">20*4</gadget>
<output>80</output>
80   P(selling 3 bottles of apple juice)= 80/210 = 8/21   The answer is 8/21.
<result>D</result>
A store has 10 bottles of juice, including 6 bottles of apple juice. In the evening, 6 bottles of juice are sold one by one. What is the probability of selling 3 bottles of apple juice among the 6 bottles? Assume that every bottle has an equal chance of being bought.